#eevblog - 2021-06-05 - AustNet Archive Project

// #eevblog — 2021-06-05

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« 2021-06-04 2021-06-06 »
04:29 <K> hsn cant numbers
04:40 <hsn> noob
05:19 <coppice> That line doesn't come from an oscillator. Its something spread rectum
08:39 <hsn> yeah oscillator would be weak ... then DFLL 48MHz .. well thats the cpu core oscillator .. or u ment some other oscillator for rf stuff ?
08:49 <hsn> weak = low freq
10:53 <Nero_> low freq, so like 10 GHz or so hsn? ;p
11:06 <hsn> Heh Nero_
11:21 <hsn> How is yaa fast guy
11:30 <Nero_> good good
12:01 <hsn> Also u know 10GHz pass me like dc ? Because of aliasing .. i cant process it
13:15 <Nero_> Iḿ actualyl really good, heard some cool people in industry got excited about a paper I published
14:05 <coppice> Nero_: did it offer them money?
14:29 <Nero_> it did offer fun and profit
14:31 <Nero_> does that count
14:48 <coppice> profit is always fun
15:10 <Nero_> yes, but fun is not always profit!
35:43 <hsn> fck fun .. yes to profit
38:22 <Nero_> I prefer fun fucks
57:16 Join: Kuschelpony ([email protected]) to #EEVblog
04:29 Join: TheDude ([email protected]) to #EEVblog
40:16 <Kuschelpony> as we recently taslked about low frequency speakers, how to do a signle Hz ...
40:17 <Kuschelpony> https://www.soundandvision.com/content/eminent-technology-trw-17-rotary-subwoofer
40:19 <EEVBot> [Title] - Eminent Technology TRW-17 Rotary Subwoofer | Sound & Vision
53:40 <coppice> producing 1Hz audio is a breeze for that thing
59:22 <Ampera> Speakers designed to blow
00:10 <coppice> I'm amused by the constrast between its flat response below 20Hz, vs its awful response above 20Hz
15:19 <DHess_US> Well, I now have an AC voltmeter which can measure that low.
31:29 <coppice> most AC analogue voltmeters can measure 1Hz. You just watch the needle swaying up and down
43:47 <DHess_US> So can sampling voltmeters.
44:22 <DHess_US> As it ends up, the meter I ended up using works fine down to 10 Hz.
44:40 <DHess_US> I posted about it in the forum thread.
45:11 <coppice> is your subwoofer flat to 1Hz?
45:20 <DHess_US> Obviously not.
45:38 <coppice> I'm shocked. What use is that?
45:52 <DHess_US> My ears aren't flat to 1 Hz either.
46:13 <coppice> that's significant for headphones, but not for speakers
46:26 <DHess_US> But the subwoofer works great. Last week I had a vblog playing in the background, and mistook wind noise in the microphone for distant thunder.
47:38 <DHess_US> The woofers I have are ported and the subwoofer picks up just right to extend the low frequency response just right.
49:35 <DHess_US> My older subwoofer was broken or worn out or just not very good. It tended to make thunking noises before the low frequency output was useful.
49:51 <DHess_US> It was probably both worn out and not very good.
50:08 <DHess_US> It wasn't one I bought. Someone gave it to me 20 years ago.
51:05 <DHess_US> If there was a good front ported 2-way speaker kit available, I would probably make it. But the only one I have found is ported on the back which wouldn't be useful in my current setup.
51:36 <DHess_US> I don't feel like spending the time to design and build a set from scratch. It would be only a minor upgrade from what I have now.
51:38 <Kuschelpony> there are very little issues to move the port to the front (unless there is inside really not enough damping)
51:55 <DHess_US> Yea, I was thinking about that.
52:59 <DHess_US> I might do it but I have enough projects started this summer.
53:08 <Kuschelpony> myself i am since last winter even more interested and happy with widebanders, but might also add subwoofers
53:42 <Kuschelpony> well i almost gave up electronic projects at all, for a lack of joy, my last speaker set is finished and goes very well
54:14 <DHess_US> My current project is to repair a Tektronix DM501A multimeter which I picked up years ago which never worked. I have it figured out.
54:21 <Kuschelpony> most of my summer projects are on the artistic side and commissioned to artists who have stalled for several reasons
54:23 <DHess_US> It would be much better for speaker measurements also.
54:29 <Kuschelpony> ah well
54:53 <Kuschelpony> and i have still not found out the final step from impedance curves measured with REW to Thielle Small parameters
55:20 <DHess_US> The input multiplexor on the integrating ADC is damaged so it has high leakage. I'm going to replace just the input multiplexor and buffer with discrete parts.
55:31 <Kuschelpony> ah good to do
55:53 <DHess_US> So it will not only be repaired, but a flaw in the original design will be fixed as well.
56:03 <Kuschelpony> i consider to buy a pack of scope tubes, primarily for beeing pretty but also with some ideas to reusethem
56:08 <Kuschelpony> yep
56:46 <DHess_US> I've seen the math for converting from impedance measurements to the small signal parameters.
57:02 <DHess_US> The practical measurement and conversion isn't difficult now.
57:44 <Kuschelpony> oh well i do know it, have used equivalent circuits already 25 years ago to understand it schematically
57:56 <DHess_US> I saw a review of DATS V3 where they did it using 4 different methods and all got consistent results.
58:32 <Kuschelpony> where i am stuck is, there is that one window with that one curve and that other window with the other curve with additional mass, but i dont see how to connect them as the program needs some kind of "select the one and the other"
58:35 <DHess_US> If I was going to design and build my own speakers from scratch, that is what I would do.
58:41 <Kuschelpony> sure!
58:59 <DHess_US> So that adds to the cost of the speaker kit.
59:03 <DHess_US> Although not a lot.
59:07 <Kuschelpony> btw: i can also say the method of using a series capacitor to enhance the low end does work well
00:47 <DHess_US> Here is what the finished subwoofer ended up looking like, https://ibb.co/swfzWpY https://ibb.co/KDW56mk
00:48 <EEVBot> [Title] - IMG-0471 — ImgBB
00:57 <DHess_US> The sick is for adjusting the port from the outside.
01:06 <DHess_US> stick
01:15 <Kuschelpony> hihi, i remember that one...
01:32 <coppice> DHess_US: nice rounding of the edges
01:56 <coppice> DHess_US: why is there a handle?
02:05 <Kuschelpony> my last speaker project from winter looks much uglier, it was made from what i could get in the few stores that had open, so like randomly buying that spray can of mint green that was randomy available in the foodstore
02:37 <DHess_US> coppice, some of the seams on top show through the paint. I didn't do a very good job with the sanding sealer, but it is hardly noticeable. I didn't really have the right sandpaper for my finishing sander but I do now.
02:51 <Kuschelpony> aah, the SMD equivalent of MPSA42 and 92 is the PZTA42
03:12 <DHess_US> Yea, there are a bunch of parts like that.
03:27 <DHess_US> That is just *one* SMD equivalent.
03:49 <Kuschelpony> currently i was searching which modern transistors are available for a 300v amplifier
03:59 <Kuschelpony> like CRt deflection plates
04:09 <Kuschelpony> but certainly not a project for the next mont
04:10 <DHess_US> I'm well aware of them. I have detailed notes.
04:33 <DHess_US> For the VAS stage?
04:37 <Kuschelpony> first i wait to get the UC3825 and look to play a bit with that
04:52 <Kuschelpony> no, for actually running an electrostatic deflected CRT
05:21 <DHess_US> Well, would apply equally to the level shifter.
05:39 <Kuschelpony> not a 60Mhz scope but perhaps some minor low frequency stuff, perhaps a recreation of the classic XY curve tracer
06:04 <Kuschelpony> perhaps i buy https://www.ebay-kleinanzeigen.de/s-anzeige/roehren-oszillographen-oszilloskoproehre-elektronikroehren/1668022368-168-7654
06:05 <EEVBot> [Title] - Error Page
06:39 <DHess_US> KSC3503 and KSA1381
08:13 <DHess_US> I don't think any of the parts originally intended for that are available anymore. But those two are close.
08:57 <Kuschelpony> i check later
09:20 <Kuschelpony> sorry for beeing not so much answering, i have now almost daily my headaches and very low mood
09:51 <DHess_US> Checking what the last generation of oscilloscopes used.
10:15 <DHess_US> For low frequency, you could use horizontal output transistors.
10:23 <DHess_US> Not the TV ones.
11:08 <Kuschelpony> im very familiar with TV and SVGA monitors
11:49 <DHess_US> Lol, I have notes about hte specific transistors.
12:16 <DHess_US> 2N5401 and 2N55551
12:27 <Lemon> anybody tried some cheap wire like this ? https://fr.aliexpress.com/item/1005001609786868.html?spm=a2g0o.productlist.0.0.9b49668eqJPEme&algo_pvid=6eb829d7-b6bd-4701-9871-b66d1c698624&algo_expid=6eb829d7-b6bd-4701-9871-b66d1c698624-4&btsid=0b0a0ae216228264965651728ea666&ws_ab_test=searchweb0_0,searchweb201602_,searchweb201603_
12:29 <EEVBot> [Title] - Fil et câble en silicone flexible de haute qualité, 5 couleurs dans une boîte, fil mixte en cuivre pur étamé | AliExpress
12:35 <DHess_US> Those were used in the last generator of horizontal output amplifiers for oscilloscopes.
12:45 <Kuschelpony> oh ok, some more i should check
13:04 <DHess_US> But the earlier ones I linked would be just as good if not better.
13:44 <DHess_US> KSA1142 and KSC2682 would be even better.
13:57 <Kuschelpony> im mostly familiar with BF759 as voltage amplifiers, or in monitors they went to exotic hybrids
14:09 <DHess_US> oscilloscopes went to hybrids also
14:15 <DHess_US> I'm ignoring those.
15:02 <Kuschelpony> its ok
15:05 <Kuschelpony> no worries
15:29 <Kuschelpony> before i go to actually build that its winter again
15:59 <DHess_US> For the much faster vertical outputs they used ...
16:17 <Kuschelpony> currently im much more thinking about a water dragon suit project... but also about some DCDC converter just to get soldering somethign in between
17:18 <DHess_US> They used a stack of two BFR96
17:41 <Kuschelpony> wow, thats a pretty fast one
17:59 <DHess_US> And only 15 voltes
18:02 <DHess_US> volts
18:10 <Kuschelpony> but well i understand why a scope wants to reach the absolute maximum bandwith while needing only some ten volts
18:13 <DHess_US> But that is what you need to get 100 MHz bandwidth
18:17 <Kuschelpony> right
18:35 <DHess_US> Horizontal bandwidth only needs to be 1 MHz or so. 2 and 3 MHz was common.
18:42 <Kuschelpony> i have datasheets of scope tubes that even had internal electron lenses for scanning magnification
18:56 <Kuschelpony> to get full height around 20 v
19:50 <DHess_US> Pretty much all oscilloscopes had scan expansion after 1964 if they were high bandwidth
20:24 <DHess_US> The 50 MHz Tektronix 547 was the last high bandwidth oscilloscope they made without scan expansion.
20:42 <Lemon> hey rust_collector I fixed the metrix
20:50 <Kuschelpony> Philips D13-500 for example, from 1973 is just right next to me (only datasheet not the real tube)
21:00 <DHess_US> Which is why it held on for so long. People wanted them because the lack of scan expansion means they had a sharper display.
21:09 <rust_collector> hey Lemon that is not bad, what did you do?
21:10 <Kuschelpony> right
21:15 <DHess_US> Yea, Hitachi had some after that.
21:25 <DHess_US> I'm not sure about Philips.
21:30 <Kuschelpony> hmm, moment
21:53 <Lemon> I desoldered pins that were connecting the board to connectors, replaced them with some copper wire of the same diameter, screamed at it for a good 4-5 hours and it finally worked
21:56 <Kuschelpony> i have to check which age my grundig 60Mhz scope is, something of the middle 80s that has also a plain tube without magnification
21:58 <DHess_US> Some of the late Hitachi CRTs were known for being very very clear.
22:09 <Kuschelpony> thats also a supoer sharp tube
22:11 <Lemon> played with the tape in the case to add pressure to the lcd
22:22 <Lemon> now it works :>
22:29 <Kuschelpony> and they had a automatic timebase range selector build in discrete logic
22:33 <Lemon> its decently accurate, within its specs I'd say, maybe not for ohms
22:49 <DHess_US> Usually have to check the schematic to see if the tube has elements for scan expansion to really know, although if you have a working one, it is easy to test.
23:01 <Kuschelpony> its still my primary scope :)
23:18 <Kuschelpony> yeah i did collect three over the years
23:50 <DHess_US> You can test it by setting a slow sweep speed so that you can watch the beam travel across the CRT, and then look for a "ghost" which follows the spot, catches up at the middle, and then precedes the spot off the right side.
24:26 <DHess_US> That "ghost" is from electrons hitting the scan expansion mesh, so an oscilloscope like the 547 does not have it.
24:52 <DHess_US> Of course if your CRT uses quadrupole lenses for scan expansion, then it also will not have that ghost.
24:53 <Kuschelpony> yep, thanks for the tip
25:09 <Kuschelpony> oh and i have to correct i have 4 analog scopes, there is also the DGR mini one
25:13 <DHess_US> I don't know what those late Hitachi and Philips CRTs used.
25:28 <DHess_US> I have ... a lot.
25:39 <Kuschelpony> hihi
25:43 <DHess_US> 2247A and 2232 sitting here in front of me.
26:08 <Kuschelpony> my primary is the grundig, secondary is a cheap voltcraft digital one, good for saving to USB and halfway useable FFT
26:33 <DHess_US> have another 2232, 2 x 2230, 2246, 547, 545, 7603, 2 x 7834, 7854, 465, 7904
26:42 <Kuschelpony> also i have an philips with true double beam tube, that has nice long sky blue persistence (NOT P7)
27:00 <Kuschelpony> and a philips that runs of 24V accumulator pack, but is still a fullsize one
27:13 <Kuschelpony> you have certainly more space than i have...
28:53 <DHess_US> Measuring warmup drift on my stack of 2230 series scopes, https://ibb.co/x8mRrtL
28:54 <EEVBot> [Title] - 4 — ImgBB
28:58 <Kuschelpony> if i actually build that XY tracer its going to be the third row over the bench
29:20 <coppice> long persistence blue is an odd one. most long persistence tubes were a mix of blue to give a fast attack, and yellow to do the long persistance
31:31 <Kuschelpony> yep, thats P7
31:42 <DHess_US> After I fix this DM501A and probably my NASA DC505, I will probably refurbish my 7603 oscilloscope. It needs new aluminum electrolytic capacitors.
32:28 <Kuschelpony> moment, looking deeper in the databook
33:29 <Kuschelpony> i think it was P11 that is the short blue screen that was optimized for photographing
33:47 <Kuschelpony> then adding an yellow layer to get the P7 double screen
34:16 <Kuschelpony> P1 is the middle yellowisch green on most old tubes running at lower voltages
34:36 <DHess_US> P11 was for photography
34:42 <Kuschelpony> P31 the deep green on my grundig and other high performance tubes with post deflection acceleration
34:52 <Kuschelpony> yep
34:52 <DHess_US> P7 was the long decay blue
35:21 <Kuschelpony> P11 was designed to me best on photograpic film and also a fast decay for recordings where the fil was the timebase and the tube only scanning in Y direction
35:40 <Kuschelpony> no, P7 is the one that first lights bright blue and then decays in the olive yellow
35:45 <DHess_US> P7 was 75% of P11, and the common green P31 was 50% of P11.
36:14 <Kuschelpony> ah
36:18 <Kuschelpony> noted...
36:53 <DHess_US> That is for film writing rate.
37:23 <DHess_US> For the mark 1 eyeball, P7 is 35% of P31, and P11 is 15% of P31
39:32 <coppice> when you consider the horrible compromises of phophors in these technical applications its amazing there happened to be 3 phosphors with the right characteristics to do R G and B for a TV tube
40:53 <Kuschelpony> coppice you have more than 50 to choose from
41:13 <Kuschelpony> so it was just to select which one fits best for a group of applications
41:46 <Kuschelpony> and lots of money to search for that magic RGB combination
41:52 <coppice> Kuschelpony: but good colour rendition combined with reasonably matching fade rates impose serious constraints
42:13 <Kuschelpony> when i was a child, one of my dreams was one scope with 4 tubes of different screens next to each other
42:22 <Kuschelpony> coppice yes
42:39 <coppice> nobody ever built a scope from a penetron tube
42:56 <Kuschelpony> but see it that way, each dot on a color CRT gets hit less than one hour by the beam over the wholöe 20 year lifetime of the TV set
43:12 <Kuschelpony> hihi
43:25 <Kuschelpony> might have been a nightmare with the changing deflection sensitivity
45:52 <coppice> aligning the graphics screens that used penetrons must have been a nightmare. They did achieve terrific results, though
46:02 <Kuschelpony> somewhere i also have an unused tube in my collection that was perhaps for radar but still with xy deflection plates, that has a yellowish screen that is said to have little immediate light but increase the light intensity when the trace repeats many times
46:26 <DHess_US> The original red phosphor didn't use europium and was more like orange.
46:50 <Kuschelpony> im not sure, did not made much reserach in that direction
46:58 <coppice> Kuschelpony: most radar tubes use X Y deflection plates
47:54 <Kuschelpony> coppice, oh, i was under the impression that most used either rotating deflection coils, or stationary xy coils driven by some potentiometer arrangement to multiply x and y with r
48:12 <coppice> DHess_US: TV phosphors went through a number of iterations, and not all makers used the same ones.
48:38 <Kuschelpony> thought electrostatic plates were rarely used for radar as they wanted bright sort tubes with high pda and deflection angle
48:50 <Kuschelpony> so like a TV tube
49:58 <coppice> Kuschelpony: most of the radar stuff I have worked with has a pretty high anode voltage, and a bright display, but use X Y deflection plates. The tubes were quite long
50:36 <DHess_US> how high of an anode voltage?
51:00 <coppice> well, more than 5V, so voltages I consider unsafe
51:02 <DHess_US> Wait, which point did they operate at zero volta?
51:22 <DHess_US> You can make CRTs with high cathode, high anode, or high voltages for both.
52:09 <DHess_US> Later oscilloscopes use a high negative cathode voltage, and may or may not use a high positive PDA voltage, because that allows the electrostatic deflection plates to be ground referenced.
52:51 <DHess_US> Some early oscilloscope CRTs had the deflection plates at high positive voltage and the cathode grounded.
53:22 <Kuschelpony> dhess it gets most crazy if you look at electrostatic deflected TV sets
53:33 <DHess_US> Yea, I know they existed but never studied them.
54:23 <Kuschelpony> there had been some where the deflection system including the sawtooth generator floated kilovolts above ground, just sync pulses over coupling caps
54:34 <DHess_US> TV CRTs needed very high z-axis bandwidth so a different set of optimizations apply.
54:55 <Kuschelpony> because for the video bandwith they wanted a conventional amplifier coupled ti the cathode near ground
54:59 <Kuschelpony> yep
55:04 <DHess_US> exaxctly
55:34 <Kuschelpony> i was TV service tech in the 90s and early 00s and one of my hobbys was to learn that crazy stuff
55:38 <DHess_US> Oscilloscopes needed the highest vertical deflection bandwidth, and only moderately high z-axis bandwidth.
55:53 <Kuschelpony> i also had serviced the last sets in use that had SCR line output stages
56:14 <DHess_US> z-axis bandwidth only needed to be 20 to 50 MHz or so.
56:30 <DHess_US> but monitor CRTs often had 400 MHz.
59:13 <Kuschelpony> i think i slowly drop out today and try to sleep
59:56 <TheDude> hahaha
00:16 <TheDude> anyone watch the eevblog video on thevenin and norton equivalents?
00:32 <TheDude> he repeatedly breaks his tongue over the word "thevenin"
00:47 <TheDude> :D
01:03 <DHess_US> That is what you get from someone in AUS-tralia.
03:25 <TheDude> lol
03:28 <TheDude> kerrchoff
04:45 <TheDude> exetera :D
30:50 Quit: TheDude ([email protected]) Quit: Leaving
37:04 Quit: Kuschelpony ([email protected]) Connection closed
33:57 <Nero_> https://www.eetimes.com/ku-leuven-tests-first-commercial-pmf-transceiver-module/
34:00 <Nero_> woop woop
34:10 <EEVBot> [Title] - KU Leuven Tests First Commercial PMF Transceiver Module | EE Times
37:07 * T3sl4 pats Nero_ on the back
37:46 <T3sl4> so that was a driver for an AOM or something?
38:00 <Nero_> well, not strictly optical, but indeed
38:09 <Nero_> with a ¨chinese telecomunication manufacturer¨
38:19 <Nero_> wonder who that is huh
38:47 <T3sl4> "a"
42:31 <Nero_> but yeah, now for the 100 gbit barrier...
48:04 <DHess_US> But it saves only 50 to 66% of the power. Is that worth it?
48:12 <DHess_US> And that is in the transceiver.
48:44 <DHess_US> Is power a limitation with with optical transceivers?
01:37 <DHess_US> You are in a maze of twisted pin headers, compatible with the Molex SL connector, all alike.
53:36 <coppice> Nero_: well there are multiple possibilities, but your wording strongly suggests one
01:08 * Ampera tosses T3sl4 out the nearest porthole
01:45 * T3sl4 vitrifies Ampera
02:03 * Ampera crystallizes T3sl4 
09:03 <T3sl4> uh, silicon trombone? https://en.wikipedia.org/wiki/Polycrystalline_silicon#/media/File:Leo_Tie_Rodsedit.jpg
09:05 <EEVBot> [Title] - Polycrystalline silicon - Wikipedia
18:39 <T3sl4> a hairpin shaped CVD process, i suppose, but it's really anomalous without any caption
22:17 <coppice> T3sl4: I've seen those things before, but I don't know their purpose, or how they are made
10:03 <DHess_US> The DM501A that I have came from the Air Force.
51:47 Join: newbie ([email protected]) to #EEVblog
53:31 <newbie> Hello. I have a power supply board where one of the capacitors leaked its guts out: https://ibb.co/m4BbsPX -- I removed the capacitor and cleaned the board and found that the traces under are intact though the copper is exposed. I am reluctant to replace the cap with the similar tab style cap as I am concerned that the circular part of the tab may
53:32 <newbie> touch the exposed traces. Do you see any issue with replacing with a through hole capacitor? (200V 220uF)
53:32 <EEVBot> [Title] - leaky-cap — ImgBB
55:15 <steve30> as long as the cap is the same spec it should be fine
55:48 <newbie> is there any reason why one would choose a tab style cap over a straight through hole leaded cap?
55:54 <steve30> though you may need to glue it in place for extra strength if the wires are thin
56:11 <newbie> the tabs provide support I am guessing in this case?
56:24 <steve30> Not sure, I'm guessing the tab sytle are more mechanically robust
57:25 <newbie> ok.. I have some of this on hand https://www.mgchemicals.com/products/adhesives/silicone-adhesive/premium-rtv-silicone-adhesive-sealant/ -- so I will use this for extra strength
57:26 <EEVBot> [Title] - 1035 - Premium RTV Silicone Adhesive Sealant
57:30 <newbie> thank you!
59:52 Quit: newbie ([email protected]) Quit: http://www.kiwiirc.com/ - A hand crafted IRC client
03:11 <T3sl4> mmm, ice water after a nice walk
04:03 <T3sl4> conversely, tea would be a nice water after an ice walk
22:12 * steve30 meows at T3sl4 
22:28 * T3sl4 gives steve30 a bowl of fresh cold water
28:01 <steve30> not coffee, but OK
29:40 <T3sl4> you can sprinkle some grounds in it for cold brew :P
40:41 Join: Guest69 ([email protected]) to #EEVblog
40:42 Quit: coppice ([email protected]) Quit: Konversation terminated!
42:03 Quit: Guest69 ([email protected]) Quit: My MacBook has gone to sleep. ZZZzzz…
07:46 <steve30> i think i'll try and go out, since i didn't yesterday
39:16 <rust_collector> noodles cooked in cheesewater is not bad
39:20 <rust_collector> good night
39:30 * Ampera sets a fire on fire
12:10 <T3sl4> https://i.redd.it/yv2d78s3uo271.jpg
12:10 <Lemon> ok screen works
12:10 <Lemon> jesus christ
12:10 <Lemon> I dissassambled this piece of shit like 50 times, and im not exaggerating
12:10 <Lemon> but its not fixed, it doesnt measure anything
12:10 <Ampera> T3sl4, that's balderdash
12:10 <Ampera> they do something
12:10 <Ampera> they look nice
12:10 <Ampera> also since when was obsidian a crystal
12:10 <T3sl4> also since when were any of those but quartz, naturally in that shape
12:10 <Ampera> considering the size of the earth (or even all the planets in the universe), I'd imagine all of those substances would have at one point in time existed naturally in that shape
12:10 <Lemon> well enough for today
12:10 <Lemon> screen works
12:10 <Lemon> I just need to find out where its not making contact
12:10 <Lemon> when I press near connectors it works
12:10 <Lemon> but I inspected it, cant see anything wrong
12:10 <Lemon> so ye not giving up, this fella will work
12:10 <Lemon> but you can clearly see the difference of quality, between that and a fluke from the same era
12:10 <Lemon> guess its the same with cars :> cant say french ones are good
12:10 <Lemon> and movies, too
12:10 <Lemon> hmm maybe not from that era, they were ok
12:10 Quit: TheDude ([email protected]) [Ping timeout: 121 seconds]
12:10 Join: Ysjoelfir_ ([email protected]) to #EEVblog
12:10 Quit: Ysjoelfir ([email protected]) [Ping timeout: 121 seconds]
12:10 <*buffextras> [email protected] is now known as Ysjoelfir
12:10 Quit: coppice ([email protected]) [Quit: Konversation terminated!]
12:10 <electrohead> o/
12:10 <steve30> o/
12:10 <electrohead> hey mate
12:10 <electrohead> sup n stuff?
12:10 <steve30> i was just uploading this weekends video blog
12:10 <electrohead> oh nice
12:10 <electrohead> what's it about?
12:10 <steve30> https://www.youtube.com/watch?v=6xj5CDoBijo
12:10 <EEVBot> [Title] - Youtube: Video Blog - 29th May 2021 - Palestine, Cole Brothers & More Kill the Bill
12:11 <steve30> anyway, i think i should go to bed
12:11 <electrohead> I shall check it out later
12:11 <electrohead> :)
19:20 <Ampera> Haha, just started configuring the IPMI on my new supermicro board
19:29 <Ampera> firmware revision is 1.01
19:43 <Ampera> newest is 3.03
34:11 Quit: Skaface82 ([email protected]) Connection closed
34:37 * Ampera tosses a knife in the air, it manages to land right between Halcyon's feet
43:50 <electrohead> o/
44:55 <MrMobodies> Hello
44:56 <EEVBot> Hello, MrMobodies!
45:13 <MrMobodies> I was sitting down and heard a thump
45:23 <MrMobodies> about 6 pm yesterday
45:30 <MrMobodies> and I found an injured bird
45:43 <MrMobodies> like it was possessed, it was alive and breathing
45:50 <MrMobodies> I think it hit the glass again
45:52 <MrMobodies> https://imgur.com/a/f8EJB5o
45:54 <EEVBot> [Title] - Imgur: The magic of the Internet
46:01 <MrMobodies> it was fed sum syrup and water
46:10 <MrMobodies> and not it moved around a bit
46:28 <MrMobodies> it had this pattern where it tries to expand it's wings
46:29 Quit: Ysjoelfir ([email protected]) Ping timeout: 121 seconds
46:35 <MrMobodies> but struggles
48:01 Join: Ysjoelfir ([email protected]) to #EEVblog
49:53 Join: Ysjoelfir_ ([email protected]) to #EEVblog
51:45 Quit: Ysjoelfir ([email protected]) Ping timeout: 121 seconds
51:45 Nick: Ysjoelfir_ is now known as Ysjoelfir
52:11 Topic Is: Official IRC channel of the EEVblog - www.eevblog.tv
52:11 Set By: (ChanOP) on: Wed May 05 05:42:37 2021
00:37 <T3sl4> aw
15:07 Join: Kuschelpony ([email protected]) to #EEVblog
31:33 <electrohead> poor thing
56:06 Quit: Kuschelpony ([email protected]) Connection closed
04:51 Join: Nero ([email protected]) to #EEVblog
05:21 Quit: Nero_ ([email protected]) Ping timeout: 121 seconds
08:45 <MrMobodies> It was moving about a bit in the box
08:46 <MrMobodies> all calm
09:01 <MrMobodies> it was getting light outside
09:03 <MrMobodies> so I took the box outside
09:17 <MrMobodies> put it on a table sat down
09:23 <MrMobodies> and a minute later it flew away
09:35 <MrMobodies> unfortunately camera was angled wrongly
10:09 <MrMobodies> I think it hurt itself when it crashed into the glass but it looks like it has recovered
10:18 <MrMobodies> anyway got to sleep night
19:44 <T3sl4> mmm, quesadilla
24:31 Join: alfbaz ([email protected]) to #EEVblog
25:35 <alfbaz> hello there
33:49 <T3sl4> hey
37:03 <DHess_US> T3sl4, going to go with a Vishay DG419, https://www.vishay.com/analog-switches/spdt/
37:05 <EEVBot> [Title] - SPDT | Analog Switches and Multiplexers | Vishay
37:15 <T3sl4> classic
37:32 <DHess_US> Certainly classis in the sense that it is Siliconix.
37:59 <DHess_US> Nobody makes "low leakage" analog switches in the way I think of it. Linear Tech used to but I think AD discontinued them all.
38:09 <DHess_US> I think AD discontinued theirs also.
38:31 <DHess_US> I'd have to get one of my old databooks out.
38:49 <DHess_US> I wonder if the process used to make the lowest leakage switches was discontinued.
45:36 <EEVBot> [Twitter] - eevblog - If you are after a multimeter and want to compare them, there is a HUGE spreadsheet maintained on the EEVblog forum… https://t.co/uVgOLv18jl
54:18 <EEVBot> [Twitter] - eevblog - RT @TheAmpHour: Golioth: Making Things Easier for People Who Make the “Things” in IoT https://t.co/rrbXpyaG8l
55:09 <DHess_US> T3sl4, here is the block diagram of what I am going to try and fix. I don't see any reason that it will not work, https://i.ibb.co/mHMWF0L/Siliconix-LD120-and-LD121-A-3-16.png
55:41 <DHess_US> I have access to all of the signals that I need.
56:49 <T3sl4> LD120 is just a collection of junk, merely a space saver
57:17 <T3sl4> and, i guess, simply not very good at it?
57:24 <DHess_US> But I only need to replace the input buffer and multiplexor.
57:46 <DHess_US> The input multiplexor is what tends to get damaged because it is the only thing exposed.
57:47 <EEVBot> [Twitter] - eevblog - I can't help but think it's partially to piss off the Right to Repair advocates :-> Manufacturers equivalent of a g… https://t.co/y6zqX2Ym16
58:29 <DHess_US> T3sl4, it is a good design except for the issue I mentioned. It is more advanced than the Intersil except for the input buffer common mode rejection ratio problem.
59:00 <T3sl4> ah
59:10 <DHess_US> The follow on release did away with the buffer so you could use an external buffer to solve that, but it is a tough application. The way Intersil handled it was inspired.
00:01 <DHess_US> Intersil zeros the buffer while held at the input voltage, so the automatic zero circuit corrects the CMRR also.
01:24 <DHess_US> The Tektronix mod was to replace the LD120 with the LD122 which lacks the buffer, and then add an external buffer.
03:12 <DHess_US> Obviously I cannot do that exactly because the buffer is in the way unless I swap in the LD122 version. https://i.ibb.co/jJ053CD/Tek-dm501a-late-mods-tek.jpg
04:31 <DHess_US> I'd rather pay for a new $2.50 multiplexor than a questionable $20 LD122.
05:17 <DHess_US> But I will still be amazed if this works.
05:47 <DHess_US> Probably breaking the law and one or two international treaties so the Multimeter Police will raid me.
14:16 <T3sl4> throw some nice ITAR flatpacks in there, that should do it
19:18 <DHess_US> Tunnel diodes, lots of tunnel diodes.
20:24 <DHess_US> 1970s ear tunnel diodes are ITAR controlled. People have tried to *import* old Tek equipment to get the tunnel diodes to repair other equipment and US customs seizes it and pleads ITAR.
20:38 <DHess_US> *Never* mention that you are importing something for the tunnel diodes.
22:30 <T3sl4> wat
23:14 <T3sl4> but, ex-soviet TDs are abundant
23:34 <DHess_US> hehe, but not the ones which are direct replacements for the Tektronix ones.
23:47 <DHess_US> Well, GE
24:07 <T3sl4> i wonder how much they paid/lobbied to get that prohibition
24:09 <DHess_US> Those all got bought up years ago.
24:22 <T3sl4> not that it matters since they haven't made them in decades
24:30 <T3sl4> but why change what "works"?..
24:30 <DHess_US> To ban tunnel diodes? It is suppose to be a restriction on export.
25:00 <T3sl4> anything that restricts trade, increases price
25:18 <DHess_US> Tunnel diodes are specifically named but it comes from the export restrictions on test equipment which operates at microwave frequencies.
25:58 <DHess_US> Doesn't mean you can't export, but you need a license. It isn't suppose to affect imports of old equipment but Customs interprets it that way anyway.
27:13 <DHess_US> Tunnel diodes actually aren't all that difficult to make. I've heard of people doing it in their garage.
28:12 <T3sl4> it's just degenerate doping (or near that)
28:39 <DHess_US> Right, the doping level is so high that there is a lot of margin for error.
29:21 <T3sl4> i mean, random semiconductors from burnt metal can have lots of effects like that too
29:34 <T3sl4> just, none of them any good for ratings or speed, as far as I know
30:54 Join: Guest69 ([email protected]) to #EEVblog
38:28 <DHess_US> Lol, was just wondering how this multimeter calculates dB. The AD536 RMS converter as a dB output.
44:16 Quit: Guest69 ([email protected]) Quit: My MacBook has gone to sleep. ZZZzzz…
44:44 <DHess_US> "An important feature of the AD536A, not previously available
44:44 <DHess_US> in rms converters, is an auxiliary dB output pin. The logarithm
44:44 <DHess_US> of the rms output signal is brought out to a separate pin to allow
44:44 <DHess_US> the dB conversion, with a useful dynamic range of 60 dB."
46:35 <T3sl4> yeah but at what scale?
46:48 <T3sl4> isn't that gonna be more like plain bels
47:08 Join: Kuschelpony ([email protected]) to #EEVblog
50:56 <DHess_US> "Select the 0 dB level by adjusting R1 for the proper 0 dB reference
50:56 <DHess_US> current (which is set to cancel the log output current from the
50:56 <DHess_US> squarer/divider at the desired 0 dB point). The external op amp
50:56 <DHess_US> provides a more convenient scale and allows compensation of
50:56 <DHess_US> the +0.33%/°C scale factor drift of the dB output pin"
51:17 <DHess_US> Ah, so that is why there is a thermister mounted under the IC. The dB output needs temperature correction.
51:51 <T3sl4> the usual PTAT or what have you
52:12 <DHess_US> It's a gain error.
52:49 <T3sl4> that's what i said
53:50 <Halcyon> Hey guys
54:52 <Kuschelpony> Hello Halcyon
55:17 <Halcyon> Hey Kuschelpony what's doing?
56:03 <Kuschelpony> just a quiet saturday morning, breakfast, packing a letter with some special plugs for someone and having breakfast
56:13 <Kuschelpony> maybe also have breakfast
56:56 <DHess_US> Wow they want a lot of money for an AD536
57:47 <DHess_US> Cheapest one is $20 but the highest grade is $200
58:58 <Halcyon> Lovely
00:09 <Kuschelpony> if the weather stays that hot and humid i might do not much more than sit in the garden and doodle some simple layouts
01:53 <Halcyon> I only have half a weekend, I have to be in bed early tomorrow, like at 1700
02:08 * T3sl4 hug Halcyon
02:12 <Halcyon> \o./
02:18 <Halcyon> -.
02:24 <T3sl4> geez, you sure are drunk early this saturday
02:32 <Halcyon> I need to get your package to the post office tomorrow
02:44 <Halcyon> I didn't get out of bed until midday :P
02:50 <T3sl4> w00t
03:03 <Halcyon> Well I did, I had a shower, then went back to bed
03:10 <Halcyon> Woke up in a patch of drool at midday
03:11 <Kuschelpony> oh oh
03:16 <T3sl4> Kuschelpony: i'd wonder what kind of "plugs" you had in mind, but on this channel, electrical plugs would figure ;)
03:36 <Halcyon> Also knowing this channel they could be butt plugs or anal beads
03:46 <T3sl4> spark plugs?
03:50 <T3sl4> BUTTPLUGS!
03:51 <Halcyon> I guess?
03:55 <Kuschelpony> t3, i have to laugh again about your mindset and your imagination :)
04:11 <Kuschelpony> but i have to say this time its really just boring electronic plugs
04:32 <T3sl4> https://www.youtube.com/watch?v=6wjbTruO4Ko
04:34 <EEVBot> [Title] - Youtube: Prank Call - Butt Plug
04:43 <Halcyon> I am making beef and stout stew in the slow cooker
05:01 Quit: modrobert ([email protected]) Quit: Lost terminal
05:02 <Kuschelpony> to be exactly something frankensteined from an ATX power supply to replace an custom audio amp connector
05:24 <T3sl4> irish i was there, Halcyon
06:14 <Kuschelpony> ifthe weather would be dry like in winter i would run the 3d printer to make a few coilformers, but the filament took up the moisture and sputters badly
06:17 <DHess_US> Huh, Tektronix used the temperature correction circuit right out of the application note.
06:22 <Halcyon> https://www.taste.com.au/recipes/slow-cooker-gravy-beef-mushroom-stew-recipe/dwpygu2w
06:33 <T3sl4> i read that as coliforms, and was briefly concerned how you were 3d printing bacteria
06:42 <T3sl4> butt-teria at that
07:26 <T3sl4> Halcyon: wait, is there a recipie here? or even a life story? i'm confused
07:30 <DHess_US> Anyway, goodnight.
07:43 <Halcyon> Hm?
07:44 <T3sl4> wait, there's an... registration overlay over what looks like the beginning of a recipe?
07:55 <Halcyon> Oh, paywall?
08:02 <Kuschelpony> no, im this week really that boring and not doing the crazy funny stuff :(
08:09 <T3sl4> o/
08:27 <T3sl4> or members only
08:29 <Halcyon> What crazy funny stuff do you normally do Kuschelpony ?
08:38 <Halcyon> T3sl4, it shouldn't be, I don't have an account
08:49 <T3sl4> i wonder if it's twigging on my adblockers
08:52 <Halcyon> But I think from time to time it pops up to try and get you to register
09:04 <Halcyon> https://img.taste.com.au/jxfmOzgP/w643-h428-cfill-q90/taste/2021/05/slow-cooker-gravy-beef-and-mushroom-stew-171034-3.jpg
09:08 <Halcyon> That's the image
09:12 <T3sl4> yeah i got the pic
09:20 <Kuschelpony> halcyon some of these things dont fit in this channel :) but one thing i would love to do again is going out in fursuit
09:38 * T3sl4 gives Kuschelpony some coconuts
09:45 <T3sl4> (you know, to make the clop-clop sound)
09:45 <Halcyon> T3sl4, go to the main site, click on "Our most recent receipied of the day" then scroll down, it's about 4 or 5 down
09:55 <Kuschelpony> oh, well, maybe i already have true hooves :)
09:58 <Halcyon> Kuschelpony: EVERYTHING fits in this channel
10:04 <T3sl4> even my enormous dong
10:11 <Halcyon> "Enourmous"
10:29 <Kuschelpony> hmm, cant be that big if it fits on this channel as i see it on my laptop screen :)
10:31 <T3sl4> eunouourmouous?
10:39 <T3sl4> you anglophiles and your u's
10:52 <T3sl4> Kuschelpony: i'm just lucky you're not on mobile
11:07 <Halcyon> Speaking of going out out in public dressed up: https://www.youtube.com/watch?v=-ixm-UEWN6c
11:08 <EEVBot> [Title] - Youtube: Emperor Palpatine finds his Unlimited Power...cables.
11:18 <Halcyon> I don't know why I repeated "out"
11:37 <Kuschelpony> i wish i would still have people around here to also go swimming(snorkeling again
11:45 <T3sl4> aw
11:56 <Halcyon> If I could swim properly, I'd come with
12:08 Join: Kuschelpony ([email protected]) to #EEVblog
12:28 <Halcyon> I'd like to go bushwalking in my backyard with people
12:32 <T3sl4> anyway, when dad does that, he uses ground lamb as well and a few pints of guiness, as some approximation of irish stew
12:37 <T3sl4> it's quite good
12:48 <Halcyon> Oh nice :) I'll have to try that
12:57 <Halcyon> I just bought a cheap Coopers stout
13:20 <Halcyon> And I'm just using bog standard beef cuts. Nothing special.
13:41 <T3sl4> stewbeef will do fine, just simmer long enough that it falls apart yeah
13:46 <Kuschelpony> ah i do almost all days make my walkouts around the villages here
14:26 <EEVBot> [Twitter] - eevblog - Had to happen eventually, one of the drives in my NAS failed. Noisy head seek sound for a few minutes, &, would not… https://t.co/K6MbWPP3hh
14:48 <Halcyon> I just really browned it off in a wok for a few minutes, it'll go nice and tender in the slow cooker
14:56 <Kuschelpony> my problem is im wired to be single, and most of the people of my age bracket have been disappeared into professional career or family and childrens, while the young generation prefers to be seperated from the "old" people
15:19 <T3sl4> more of a "free spirit"?
15:20 <Halcyon> How old are you Kuschelpony ?
15:53 <Kuschelpony> t3 yes, like a colorful butterfly
16:01 <Kuschelpony> halcyon, im now close to 44
16:03 <T3sl4> cute :)
16:14 <Halcyon> I'm not far behind. I'm in my mid 30's
16:26 <Kuschelpony> oh tahts well
16:28 <Halcyon> I was actually having a similar discussion with a gay mate of mine from work today.
16:37 <Halcyon> He considers himself "young" (he is 27)
16:49 <Halcyon> I said, bitch please, once you hit 25 in the gay community, you are no longer young
17:05 <Kuschelpony> myself i do have remote friends from 18 to almost 80, the latter some great HAMs for soldering projects
17:22 <T3sl4> i suppose it used to be if you got to 30 you were lucky... well, that's a dark turn of history to recall
17:29 <T3sl4> or more of a US piece of history
17:50 <Kuschelpony> hmm, 25 is a hard age, i have heard usually around 30 but i do know their expectations for "Twinks" and "Bois" well
17:56 <Halcyon> True but AIDS/HIV is hardly a think anymore
18:06 <Halcyon> *thing
18:14 <T3sl4> things are definitely better since the 80s :)
18:27 <Halcyon> Absolutely, also since PREP was a thing
18:27 <Kuschelpony> yeah, since there is now "the Pill" many do not care about prevention anymore
18:34 <Kuschelpony> yep i meant this
18:51 <Halcyon> Well taking PREP is a form of prevention
18:58 <Halcyon> It just means you don't need to use condoms etc...
19:23 <T3sl4> at least for that particular STD
19:28 <Kuschelpony> when i was young i also tried to find a place in the gay community, but it was too much focussed on sex and not really much about just friends (plus some kink) to go out and explore the world
19:31 <Halcyon> Yessum
19:34 <T3sl4> or wait, is that effective against other things i forget
19:47 <Halcyon> Kuschelpony, I thought you were straight?
20:04 <Kuschelpony> as afr as i know PREPP is only preventing HIV, and certainly not replacing hygiene
20:09 <Kuschelpony> oh
21:12 <Kuschelpony> im neither gay nor straight, more the kind of "sh... on gender, its the brain that counts" but i also have learned that males tend to be easier and more open while females give me only the feeling of walking on eggshelöls
21:24 <Halcyon> So pansexual?
21:38 <Kuschelpony> perhaps, or queer, i dont know anymore
21:47 <Halcyon> I don't think it really matters?
21:51 <T3sl4> or also if you're not so interested in sex, ace or aro might apply
22:04 <Halcyon> I definitely agree with your logic that it's more about the person and the brain than the body
22:12 <Halcyon> Although personally, I do like the body to have cock and balls :P
22:22 <Kuschelpony> all i want would be local friends and on days like today to go to a lake to swim around
22:41 <Kuschelpony> well, no problems if you want this
24:51 <Halcyon> On a totally different subject, it fascinates me that things like ships and submarines, which can essentially be the size of a small town, is able to power itself and everything on-board
25:00 <Halcyon> Like kitchen stuff wouldn't be easy on electrical power
25:27 <T3sl4> well, it's easy when they have the power of literally a small town
25:37 <T3sl4> a looot of fuel oil goes into those things
25:54 <Halcyon> But to pack it all in the space is amazing
25:55 <T3sl4> or mil subs especially, nukes
26:00 <Halcyon> All the fuel, generators etc...
26:05 <Halcyon> Well yeh nuclear
26:21 <T3sl4> a large part of the hull is dedicated to motive power, yes :)
26:44 <Halcyon> Like a cruise ship with all the lighting and aux power, it would be megawatts
27:03 <T3sl4> propulsion is a good couple megawatts, too :)
27:19 <T3sl4> just tack it on, it's a somewhat larger alternator hanging off a somewhat larger engine ;)
27:43 <T3sl4> though they probably have independent generators, or one big one and the whole thing is diesel-electric idk
28:15 <Halcyon> And then backup generators on top of that
29:30 <Kuschelpony> soo, the next train is in 20 minutes, im off and see you back later
29:36 <T3sl4> o/
29:39 <Halcyon> Enjoy Kuschelpony
29:49 <Kuschelpony> just a shopping tour
29:59 <T3sl4> bring steve30 with ;)
30:07 Quit: Kuschelpony ([email protected]) Connection closed
30:21 <T3sl4> he always seems to be going to shops... or complaining about it anyway :P
33:32 Join: T3sl41 ([email protected]) to #EEVblog
34:45 Quit: T3sl4 ([email protected]) Ping timeout: 121 seconds
35:25 Nick: T3sl41 is now known as T3sl4
35:37 Quit: T3sl4 ([email protected]) Changing hosts
35:37 Join: T3sl4 ([email protected]) to #EEVblog
37:01 <EEVBot> [Twitter] - eevblog - For those playing along at home 24640 hours service, 2.8 years. It runs 24/7. https://t.co/RoYopN5f5h
40:52 <Halcyon> I wonder if they use 50/60 hz power
40:57 <Halcyon> I'd imagine they would for most things
44:00 <T3sl4> or 400Hz, but for compatibility with peoples things, probably those
44:27 <Halcyon> You can plug normal things into 400hz?
44:33 <Halcyon> Oh sorry
44:35 <Halcyon> Misread
44:51 <Halcyon> They would probably some kind of transformer for cabin mains power?
45:11 <Halcyon> Aircraft use something like 140hz or something?
45:12 <T3sl4> wonder if they provide 120/240 outlets or expect you to have a converter
45:23 <T3sl4> air and mil are often 400Hz
45:28 <Halcyon> Oh yeh so it seems
45:36 <Halcyon> So the next question is, why?
45:45 <EEVBot> [Twitter] - eevblog - 3 Year warranty according to the datasheet, anyone know how to claim that in Australia?
45:52 <T3sl4> well, why it's higher is obvious, by why 400 exactly, iunno
46:09 <Halcyon> I mean why is it higher? It is not obvious to me
46:17 <T3sl4> transformers are smaller
46:21 <Halcyon> Ah right
46:34 <Halcyon> But produces the same wattage?
46:45 <T3sl4> core material is basically proportional to power handling, scaled by, not quite inverse with frequency, but close
47:18 <Halcyon> Which would be fine for short distances
47:34 <T3sl4> a given core might get too hot at 400/60 times the volts/turn, but a bit less than that can be ok
47:53 <T3sl4> they also make em with finer steel laminations, which helps
48:01 <Halcyon> Right
48:51 <Halcyon> https://www.tiktok.com/@dmitryhitr/video/6947990577090727170?is_copy_url=1&is_from_webapp=v1
49:48 <T3sl4> oh god why is it autoplaying
49:54 <T3sl4> oh god why is it tiktok
49:58 <T3sl4> what is this faggotry
51:02 <Halcyon> I know it's depressing what the world has come to
51:06 <Halcyon> But it has a cat
51:52 <T3sl4> there was a mashup a long while ago, lemme see
52:09 <T3sl4> oh here we go https://www.youtube.com/watch?v=xLo-u17V-lY
52:10 <EEVBot> [Title] - Youtube: Lady Gaga ft. Beyoncè Vs. Metallica "Telephone vs. Enter Sandman" (Djs From Mars Bootleg Remix
55:29 <Halcyon> Not too bad
55:35 <Halcyon> I prefer this https://www.youtube.com/watch?v=dLScpNjQbak
55:36 <EEVBot> [Title] - Youtube: Prodigy Vs Enya - Smack My Bitch Up The Orinoco Flow
57:58 <EEVBot> [Twitter] - eevblog - Then again, I don't want to wait probably weeks for a warranty replacement to arrive...
59:13 <T3sl4> https://www.youtube.com/watch?v=G5KxZ5Lc_YA
59:14 <EEVBot> [Title] - Youtube: Lazy Town-Cooking by the book remix ft. Lil Jon
00:48 <Kuschelpony> hmm
01:08 <Kuschelpony> do you have experiences how well the UC3825 runs as an two-phase flyback controller?
01:30 <Halcyon> I want to punch you T3sl4
01:35 <Kuschelpony> that means, to connect two inductors, where alternatingly one is charged while the other is discharging to the secondary
01:41 <Kuschelpony> to half the ripple current
01:50 <Kuschelpony> https://www.ti.com/lit/ds/symlink/uc3825.pdf
01:50 * T3sl4 smacks Halcyon up
02:01 <Halcyon> I hate kids music and I hate (c)rap
02:02 <Halcyon> :P
02:29 <Halcyon> Cop this https://www.youtube.com/watch?v=f-W4s2pe4e8
02:30 <EEVBot> [Title] - Youtube: Workin´Out Barbie (Audio Cassette)
02:54 <Kuschelpony> im not sure if i should start one more project before finishing other stuff, but currently i could use an adjustable converter for 0 to 500v 30mA
03:26 <T3sl4> this is legit really good tho https://www.youtube.com/watch?v=dU2Pbm9wtnw
03:27 <EEVBot> [Title] - Youtube: MASHUP - Beat It, Trooper! [Iron Maiden vs. Michael Jackson]
03:51 <Halcyon> A little heavy for my liking
04:21 <T3sl4> not heavy enough for my liking
04:40 <T3sl4> there's some pretty crazy bill mcclintock mashups with like slayer vs ABBA or some shit
04:48 <T3sl4> good too
06:11 <Kuschelpony> if only the error amp would have a common mode voltage range down to 0V
09:46 * Halcyon tosses T3sl4 a ball of Bocconcini
10:09 <EEVBot> [Twitter] - eevblog - NEW Video on EEVblog2! Synology NAS Western Digital RED Hard Drive FAIL https://t.co/L0Q96zIsSF
10:15 * T3sl4 savors Halcyon's ball(s)
18:02 <T3sl4> i've been having burritos mostly this week, with lentils instead of beans for whatever reason
18:09 <T3sl4> and chipotle in adobo sauce :)
18:16 <Halcyon> Sounds good
18:25 <Halcyon> I like lentils, but I think you need beans as well
19:01 <T3sl4> i have plenty, just haven't prepared any yet
19:10 <Halcyon> You buy dried beans?
19:15 <T3sl4> ye
19:25 <Halcyon> I'm lazy, I usually just buy canned
19:37 * T3sl4 slaps Halcyon with a canned cannelini
19:41 <Halcyon> :P
20:28 <T3sl4> it's hardly any work to prepare, the real annoyance is actually having to plan meals since they take some hours to cook
20:51 <Halcyon> Yeh I know
20:58 <Halcyon> I'm an almost daily shopper
21:11 <T3sl4> sheesh
21:14 <Halcyon> I don't do big shops, I just go in with a basket and get the things I feel like that day
21:24 <Halcyon> It's literally on my way home *shrug*
21:28 <T3sl4> heh
21:37 <T3sl4> i go every week or two
22:18 <Halcyon> I have 2 local supermarkets within 5 minutes drive so it doesn't bother me
22:24 <Halcyon> I just don't know what I feel like tomorrow
32:44 <EEVBot> [Twitter] - eevblog - Nice debunk of this StarScope scam. cc @thunderf00t https://t.co/deyyTQRcOY
00:32 <EEVBot> [Twitter] - eevblog - PhotonicInduction (Andy) UPDATE: He's got a new computer that actually works and new camera and is ready to produce… https://t.co/c2t8wzhMCv
15:07 <T3sl4> Kuschelpony: there was some oddball toggle flipflop and gate driver chip unitrode made, but i'd recommend using UCC3808 or something like that instead
15:48 <T3sl4> oh wait, -25 not -42, nvm?
17:54 <EEVBot> [Twitter] - eevblog - People have been mentioning EFAX (bad) models vs EFRX (good). One has SMR (bad) one has CMR (good). The drive that… https://t.co/ga0KAxuiwh
23:34 <Kuschelpony> tim, i know tzhat 3808 as CCFL driver and had long ago abused one trying to power a tesla coil in CW mode :)
23:54 <T3sl4> w00t!
24:21 <Kuschelpony> the UC3825 is a special ic as i combines the toggle flipflop for push-pull operartion like in the SG3525 with the ability to run in current mode like the UC3842-family
25:49 <Kuschelpony> hmm, i think i order a few of them anyway in the next weeks, just to play with them
25:58 <T3sl4> oh that was the one, yeah
26:35 <T3sl4> oh, so, it's the same current comparator, the 3842 behind it, right? you can't do biphase that way, you basically need two 3842s synced with phase shift and their COMP pins tied
27:02 <T3sl4> the 3825 thingy is for when you dont have 3808 i guess
27:08 <Kuschelpony> you just described the 3825 :)
27:44 <Kuschelpony> it looks like it can be operated as the 3842 but with two outputs alternating
28:17 <Kuschelpony> so on the one output that is currently "high" it could charge the one storage inductor, while the other storage inductor is passively discharging into the output
28:20 <EEVBot> [Twitter] - eevblog - So should I replace my existing single working SMR (EFAX) drive with a CMR one while I'm at it?
28:23 <Kuschelpony> im really tempted to try...
28:33 <T3sl4> alright, i'm looking it up
28:49 <T3sl4> oh, i remember, it's more like an improved current mode 3524
29:26 Quit: Stiff ([email protected]) Ping timeout: 121 seconds
29:41 <T3sl4> so yeah, 3808 with more pins/functionality
33:10 Join: Skaface82 ([email protected]) to #EEVblog
33:33 <EEVBot> [Twitter] - eevblog - Well, I can't obviously replae at the same time, I would need to put in the new replacement CMR one, wait for hte r… https://t.co/cGFFiVzo7H
38:54 <K> hello crabs
38:55 <EEVBot> Hello, K!
39:24 <T3sl4> hello cancriforms
56:40 <Lemon> hi frens
58:09 <T3sl4> le french mon has arrived
58:32 <Lemon> yes
58:34 <Lemon> and Im determined
58:45 <Lemon> today, le metrix mx 575 better work !
59:22 <Lemon> I finally fixed the screen after openning it like 50 times yday night, using IPA to clean contacts, reflowing pads and adding tape to apply pressure (layer by layer)
59:45 <Lemon> but there is still a bad contact somewhere, if I dont apply pressure near connectors, it wont measure anything
00:05 <Lemon> but I looked carefully and I cant find what it could be, I thought it was a bodged transistor, but once resoldered, nothing
03:28 Join: modrobert ([email protected]) to #EEVblog
04:39 Quit: modrobert ([email protected]) Quit: leaving
05:37 Join: modrobert ([email protected]) to #EEVblog
06:47 <K> hm, are you sure measuring stuff is related to screen not working properly?
06:59 <K> those seem like separate subsystems to me
11:20 <Lemon> nono its not
11:23 <Lemon> screen is fixed
11:26 <Lemon> its another issue
11:36 <Lemon> when I turn it on, it works perfectly, showing 0's
11:50 <Lemon> if I apply lets say 5 volts, it doesnt change
12:02 <Lemon> but if I apply pressure near connectors, a bit up in fact, it works
12:10 <Lemon> so its a bad contact somewhere but where ? I cant find it
14:19 <Lemon> so for the 74523th time I'll open it
32:18 <K> does it work if you apply 5v across where connectors connect to the pcb?
34:46 <Lemon> thats what im about to try yeah
39:09 <Lemon> problem is it needs to be in the case
39:13 <Lemon> for the lcd to work :>
39:19 <Lemon> I will try to solder wires on itt
41:31 <K> do a reverse probe first?
41:34 <K> no need to solder
41:56 <Lemon> yeah I did too
42:16 <Lemon> well yeah I need to solder it, because in the case there is multiple layers of tape that apply pressure to the screen
42:21 <Lemon> but no worries
42:25 <Lemon> I will solder some wrapping wire
42:30 <Lemon> pads are super big
47:14 <Lemon> hi peeps
47:25 <Halcyon> Hey lemon
48:02 Join: Kuschelpony ([email protected]) to #EEVblog
48:10 <Halcyon> How was shopping Kuschelpony ?
49:25 <Lemon> I received a fluke non contact pen tester today :>
49:28 <Lemon> its a fun tool
49:35 <Kuschelpony> seaty, i already took my second shower today
49:43 <Kuschelpony> but thanks for asking
49:53 <Kuschelpony> ah nice, lemon
50:06 <Kuschelpony> i also have something on my shopping list
50:14 <Kuschelpony> except that its purely passive
50:44 <Lemon> hmmm I found some lt1001a on ebay, for not that much
50:52 <Lemon> but I have no idea if they are genuine, or at least good fakes
51:12 <Lemon> https://www.ebay.fr/itm/372308132599?hash=item56af4b42f7:g:lI8AAOSwcMJgn2Bm and those https://www.ebay.fr/itm/153025491530?hash=item23a107b24a:g:XTQAAOSwC71cg~Hk
51:14 <EEVBot> [Title] - 3PCS nouveau LT1001A MOT 9126+ CAN-3 | eBay
51:24 <Lemon> it works
51:26 <Lemon> ggwp
51:50 <T3sl4> wb
52:13 <Lemon> so its connectors themselves
52:14 <Lemon> hmmmmmm
53:53 <Lemon> what do you think T3sl4 ? are those good chips ? or too cheap to be good ?
54:22 <T3sl4> it's ebay, you have to ask?
55:25 <Lemon> well I have zero experience buying chips
55:35 <Lemon> even less those type of precision opamps
55:50 <Lemon> sometimes you get genuine stuff on ebay, sometimes you dont, so idk if its the same for chips
57:10 <Kuschelpony> ergh!!!!!
57:19 <Kuschelpony> it should be visible here https://www.voelkner.de/products/208512/VOLTCRAFT-MS-100-Beruehrungsloser-Spannungspruefer-CAT-II-250V-LCD.html
57:21 <EEVBot> [Title] - VOLTCRAFT MS-100 Berührungsloser Spannungsprüfer CAT II 250V LCD, A040 | voelkner - direkt günstiger
57:35 <T3sl4> if you don't have any way to verify it is what it says, then either suck it and see, and expect to get swindled; or avoid it and get it from a reputable source
57:45 <Kuschelpony> but as i have javascript switched off, they decided i am a bot and should sent an e-mail to unblock my IP to view the catalogue again
58:12 <T3sl4> the server actually blocked your ip? wat?
58:41 <Kuschelpony> hmm thinking about the opamps: if they are precision opamps with specific features, i think it should well doable to make a test circuit wwhere an LM358 fails :)
58:45 <Kuschelpony> yes
59:25 <Kuschelpony> it seems to increasingly happen that DDoS attack prevention blocks righ off when you have a non-mainstream browser id and/or javascript switched off, because all "good" people dont do this
00:02 <Kuschelpony> so either you have to solve an captcha and/or sent an mail to proff beeing a human user who wants to look into the catalogue
00:38 <Lemon> the little fluke tester dont even have a lcd, basically it beeps/lights up if theres over 200VAC
00:44 <Lemon> its great :> simple and works
00:46 Quit: Ysjoelfir ([email protected]) Changing hosts
00:46 Join: Ysjoelfir ([email protected]) to #EEVblog
00:50 Mode: (by ChanOP) +o Ysjoelfir
01:32 <Kuschelpony> the one thing i wanted to link is purely an LCD (plus some resistors)
01:35 * T3sl4 hands Lemon a few copper and zinc plates and an LED, watches it light up
01:36 <Lemon> the USA version cost around 30+, the chinese version 10 euros
01:47 <Kuschelpony> i had an earlier one and loved it but the case broke after a year in my pockets
02:20 <Kuschelpony> was great, no batteries, just using the electric field around wires to let an bargraph appear on the LCD
02:43 <Lemon> ha yes this one requires batteries
02:51 <Lemon> it blinks to tell its on
03:18 <Ysjoelfir> what connectors are that?
03:49 <Lemon> shrouded ones
04:02 <Lemon> hmmm I noticed that the metrix dmm I fixed got some linearity issues
04:14 <Lemon> the higher you go on the range, the less accurate it becomes
04:21 <Lemon> I guess its normal, to some extent
04:27 <Lemon> but can this be calibrated ?
04:32 <K> shrouded in disapointment
04:38 <Lemon> or you can just adjust the absolute value
04:47 <Lemon> I will clean them again
06:22 <Halcyon> Mew
06:29 <Kuschelpony> puh, no idea... thats what you have to ask labs who do calibration
06:53 <Kuschelpony> but i think there should be individual calibrating setpoints for all ranges
07:39 <Ysjoelfir> take a pic, there are different kinds of those.
07:44 <Lemon> nope doesnt work
07:54 <Lemon> it works when I press on COM
07:54 <Lemon> well for sure there is, but idk if you can adjust for example the max and minimum
08:03 <Lemon> like, for 20v range
08:10 <Lemon> you apply 20v, or a bit less, you adjust it
08:15 <Lemon> then you adjust 1v or whatever
08:21 <Lemon> and it correct that nonlinearity issue
08:26 <Ysjoelfir> just to be sure... you did the obvious thing and checked for cold solder joints, didn't you?
08:27 <Lemon> but I think you cant do that
08:32 <Lemon> yes
08:34 <Lemon> there is only a couple trimpots to adjust one value per range
08:37 <Lemon> I reflowed them
08:42 <Ysjoelfir> I usually just resolder everything
08:47 <Ysjoelfir> if I find one
08:52 <Ysjoelfir> especially on such small things
09:01 <Lemon> well this is a big part with 4 connectors
09:07 <Lemon> so it will be hard to remove
09:13 <Lemon> on another subject, I think I found the esd mat I'll buy !
09:15 <Lemon> https://www.conrad.fr/p/ensemble-avec-tapis-antistatique-esd-wolfgang-warmbier-1402663cy-1400663c-gris-platine-l-x-l-900-mm-x-610-mm-c-186004
09:16 <EEVBot> [Title] - Ensemble avec tapis antistatique (ESD) Wolfgang Warmbier 1402.663.C.Y 1400.663.C gris-platine (L x l) 900 mm x 610 mm c | Conrad.fr
09:25 <Lemon> I will send you a pic
09:29 <Lemon> on your dear phone
09:41 <Lemon> size is good, it comes with needed accessories, the brand is a "real" brand (ot those brands rebranding stuff only)
10:20 <Ysjoelfir> speaking of pics, you asked me to take updated photos of my workspace https://drive.google.com/drive/folders/17Sji1hCRLNSw6eYQcjuXTFc3cjIa7De8?usp=sharing
10:21 <EEVBot> [Title] - 20210503 - Google Drive
10:34 <Lemon> issue is, I will have to put some of my test gear on it
10:39 <Lemon> as my desk isnt big
11:01 <Lemon> ha yes ! thanks I will take a look :>
11:46 <Lemon> ok sent
12:38 <Lemon> I tried to solder some wire on the pin side of the connector, and it worked that way
12:43 <Lemon> so it seems to be inside the connector
12:47 <Lemon> but it looks really good
13:04 <Lemon> but yeah it will bring me some peace of mind
13:51 <Lemon> what I dont understand, is that there is continuity
14:03 <Lemon> between the interior of the connector and that pin, where I soldered a wire
14:56 <Lemon> ha wait
14:58 <Lemon> not anymore
15:22 <K> cables on the emergency stop button?!?!?1/111111
15:30 <K> (screams in vde)
16:37 <Kuschelpony> its fine
16:57 <Kuschelpony> i put all my testgear on a shelf i made from scrap wooden plates above the table
17:27 <Lemon> ok its the COM port, 100%
17:27 <Lemon> well ideally I'd build shelves and stick them to the wall but I cant, as im renting this flat
17:32 <Lemon> I will find out
17:33 <Lemon> and tbh, walls are shit
17:49 <Lemon> I doubt it would handle more than 1 instrument
18:34 <Kuschelpony> oops
18:36 <Ysjoelfir> K: yes! Its a decorative aspect, nice, isn't it?
18:50 <Kuschelpony> mine is in front of the wall, built over the table
19:25 <Kuschelpony> like on the left and right side of the table a pair of planks vertical up, and then two horizontal planks above the bench for the test gear
19:37 <Kuschelpony> and the table itself, well no i dont make photos... :)
20:53 <Lemon> hmm I will have to think of something when I'll move the lab to my flat
20:57 <Lemon> as im at my mothers house right now
21:07 <Lemon> I dont have much space to work
21:11 * Halcyon nibbles on pizza
21:23 <Lemon> like 1m50 <---->
21:34 <Lemon> by 50
21:41 <Lemon> then there is instruments
22:02 <Ysjoelfir> mrs wife just shared that with me. not sure what I should think about that. https://www.youtube.com/watch?v=NXMGi9kQ3TE
22:03 <EEVBot> [Title] - Youtube: BMW Self Balancing Motorbike Demonstration LIVE Driving BMW Vision 100 BMW Autonomous Bike CARJAM
25:30 <Halcyon> Which part of that video does she want? The girl or the bike?
26:32 <K> is that internal combustion engine there?
26:37 <Ysjoelfir> neither, she just wanted to shot me the future of "motor"cycles
26:41 <Ysjoelfir> no K, its E
26:58 <K> oh, those are some balancing gyros or somth
27:23 <Halcyon> Those tyres don't look like they would be very good in the wet. The tread pattern is all wrong.
27:23 <Kuschelpony> oops, crammed
29:14 <Lemon> yeah, it will be better in my flat
29:20 <Lemon> I will get more desks :>
29:30 <Lemon> because right now, on my desk there is :
30:16 Join: Guest69 ([email protected]) to #EEVblog
30:17 <Lemon> tek tds 540/2245, a 2Mhz function gen on top of it, topward triple output supply, a gossen single output supply with a small sodilec supply on top of it, a kunkin e-load
30:32 <Lemon> and a keithley 175 + asus screen on top of the 2245
30:38 <Lemon> rest of gear is behind me
30:44 <Lemon> which is not practical at all
31:01 <Kuschelpony> puh, my gear is mostly old junk restoed to be working again
31:14 <Kuschelpony> i compensate top gear with creativity and low demanding projects
32:51 <Lemon> everything comes from a local craiglist like website, ebay, and a few from Ysjoelfir/Mamalala (long time no see)
32:56 <K> oh well.
33:46 <Lemon> behind me theres an hp 3456a, a fluke 8502a, hp 5345a, a lmg90, a chinese lcr meter (I need a better one), bg7tbl gpsdo/distribution amp/counter
33:53 <Lemon> then theres a couple handhelds
34:06 <Lemon> a ths710a that I need to mod, and add a new battery
34:21 <Kuschelpony> i have not yet met Ysjoelfir
34:41 <Ysjoelfir> I realy like the VISUALS of those tyres (and its on the seat as well), but I agree, those would be totally useless. I absolutely hate her hair. and that seat. that looks so uncomfortable. also the general sitting position, looks like another one of those "monkey on the grinding wheel"-bikes
34:43 <Kuschelpony> most of my gear was from schooldays when the teachers cleaned out the labs, and from local in person fleamarkets
35:10 <Lemon> ho nice, I'd love to get stuff like this :>
35:22 <Kuschelpony> my next thing i want to build as test gear would be a suitcase with laptop, audio amp and some speaker measurement siftware that i can "freeze" to be offline and never changing anymore
35:36 <Kuschelpony> schooldays are past 25 years ago...
35:56 * Halcyon hugs Ysjoelfir 
36:34 Quit: Guest69 ([email protected]) Quit: My MacBook has gone to sleep. ZZZzzz…
36:36 <Ysjoelfir> more!
36:37 <Lemon> that would be quite neat :>
36:51 <Kuschelpony> as i mentioned a few times, electronics itself does not give me anymore good feelings the past years
37:03 <Lemon> im thinking more and more about getting a small laptop that I could leave 24/7 on for measurements, etc
37:09 Join: Guest69 ([email protected]) to #EEVblog
37:18 <Kuschelpony> but one of the things that saved me over the winter from finally breaking down was to build a few speaker projects from scrap
37:24 <Lemon> well im begininng in it, so I have a world to discover :>
37:36 <Lemon> I must say I love gadgets, test equipement, tools... etc
37:39 <Halcyon> Hehehe
37:40 <Kuschelpony> its a nice world
37:43 <Halcyon> *cuddles*
37:48 <Kuschelpony> you might have decades of fun
37:56 <Ysjoelfir> weeeeeeeee!!! \o/
37:59 <Halcyon> Hahaha
38:01 * Ysjoelfir grabs K and makes him join
38:10 <K> nooooooooo
38:15 <Kuschelpony> just take care that you still watch for signs of your body and soul, if they might ask you to do other things in life as well
38:18 <Halcyon> Oh don't fight it
38:24 <Halcyon> Guys hug :P Deal with it
38:35 * K burrows
38:43 <Lemon> heh screw this, lab before all !
41:28 <Kuschelpony> mmh, betetr to keep both in paralell
42:12 <Kuschelpony> i really miss how i could have going out with friends, doing crazy physical demanding stuff, in the time where i had also focussed all on electronics
42:50 <Kuschelpony> and there i still oots of shit to to when i can build matchign social connections again
42:52 <hsn> https://www.onsemi.com/pdf/datasheet/ncv7754-d.pdf
42:56 <hsn> might be an option
43:05 <Halcyon> T3sl4, this stew turned out amazing
43:13 <T3sl4> \o/
43:40 <hsn> i've no idea of i should have it on my design or not .. its not available on digikey ...
43:49 <Halcyon> Although I cooked it for 6 hours. Much nicer. And added a bucket load of freshy ground pepper
44:17 <Halcyon> I think it would work well with some nice pasta or rice
44:29 <Halcyon> Or in a pie :D
44:32 <Halcyon> OMG yes
44:57 Quit: Some_Person ([email protected]) Quit: ZNC 1.8.2 - https://znc.in
45:01 <Halcyon> I am totally turning the leftovers into pie filling
45:50 <K> make the procurement department suffer
45:52 <hsn> not recommended
45:56 Join: Some_Person ([email protected]) to #EEVblog
46:01 <hsn> pro depart whaaaaat ? lol
46:12 <hsn> there is only me
46:17 <K> the por sod who has to source parts
46:18 <hsn> and only me suffer
46:21 <K> haha
46:42 <hsn> our "purchasing" department is disaster
46:53 <hsn> they are 120% useless on this stuff
48:04 <K> huh
48:52 <hsn> one time one of them suggested to make a mold for o-ring .. because he didnt want to look for it
48:53 <hsn> :D
49:36 <hsn> he suggested it with proud also .. thinking its smart idea
50:01 Quit: Guest69 ([email protected]) Quit: My MacBook has gone to sleep. ZZZzzz…
51:25 * T3sl4 smothers Halcyon in mashed potatoes
51:41 <T3sl4> that'd make a fine shepards pie, among other things
51:55 <Halcyon> It's weird you should mention that, I am literally watching DancingBacons making instant mash
52:24 <Halcyon> It would, but I was thinking more of a pastry pie
52:37 <Halcyon> Which apparently isn't a thing over there?
53:01 <Halcyon> "Pie" here is generally a meat/savoury type of thing, as opposed to sweet
54:04 <Halcyon> https://www.youtube.com/watch?v=qzXv1piIYQM
54:05 <EEVBot> [Title] - Youtube: Guy Fieri Gets A Taste Of Australia In The American Mid-West | Diners, Drive-Ins & Dives
54:21 <K> not the sharpest tools eh
54:50 <Lemon> a month or two ago I was tempted by this https://fr.aliexpress.com/item/4001280718072.html?spm=a2g0o.productlist.0.0.69fa47e3MoeKD2&algo_pvid=5a733382-5c2b-4f97-940b-396e2471ab8f&algo_expid=5a733382-5c2b-4f97-940b-396e2471ab8f-0&btsid=2100bde716228867337457339e955e&ws_ab_test=searchweb0_0,searchweb201602_,searchweb201603_
54:51 <EEVBot> [Title] - Testeur de courant multimètre numérique USB 3.1, détecteur de tension, lecteur Lua intégré DC 26V 6A AVHzY CT3 | AliExpress
54:56 <Lemon> I didnt buy it for whatever reasons
55:16 <Lemon> but I still kinda want it :> I like the fact that the pc software is good, and constantly updated
58:47 <T3sl4> we mostly identify "pie" as "fruit or custard filled", but yes, you can make pies that way too
59:07 <T3sl4> that's the other kind of shepards pie, or maybe i forget which one is which?
00:18 <T3sl4> steve30: https://www.reddit.com/r/Catswhoyell/comments/ns8vx6/he_always_gets_vocal_and_spins_when_he_wants/
00:19 <EEVBot> [Title] - reddit: the front page of the internet
00:30 <Halcyon> There is "Cottage pie"
00:39 <Halcyon> It's similar
08:09 Quit: Bird|otherbox ([email protected]) Connection closed
18:08 <Kuschelpony> hmmm https://www.eevblog.com/forum/beginners/high-voltage-full-bridge-driver/msg3581461/?topicseen;PHPSESSID=eo0uos82m1lmme2fn5sq6r68r3#msg3581461
18:11 <EEVBot> [Title] - High voltage full bridge driver - Page 1
19:05 <Kuschelpony> i would say, just use two lowside MOSFETs to alternatingly connect one side of the lemps to ground, while having the other passively to V+ through the ballast resistor needed anyways
21:21 * Ampera hugs Halcyon 
24:09 <Halcyon> Yeeeeee Ampera
24:23 <Ampera> how are you doing Halcyon
24:42 <Halcyon> I'm OK
24:45 <Halcyon> How are you?
25:00 <Ampera> awake
25:19 <Ampera> I had fallen asleep at 19 and set my alarm for 3, with the intent to sleep at 8 hours
25:28 <K> u fool
25:31 <Ampera> I ended up going straight past it and woke up at my backup alarm at 6
26:10 <Ampera> I have the incredible ability to activate my alarm in my sleep, despite it being on a table above me, and requiring me to swipe to dismiss it
26:31 <Halcyon> Heh
28:15 <Ampera> Halcyon, did I show you my assembled server?
28:55 <Ampera> (not the proliant)
29:18 <Halcyon> Not since you got the new board, no.
29:25 <K> unsolicted server pics
29:26 <Ampera> https://cdn.discordapp.com/attachments/315713347368648705/849418767515648090/20210601_184540.jpg
29:32 <Ampera> Let's see how many things you can nitpick like gnif
29:47 <Ampera> fan mounting excluded, because obviously that is 10/10
30:06 <Halcyon> Meh looks fine to me, apart from the missing IO shield
30:08 <steve30> hi
30:19 <Ampera> missing?
30:21 <Ampera> it's in there
30:27 <Ampera> I know, because I put it in
30:35 <Halcyon> Not in the photo it isn't
30:38 <Ampera> yes it is
30:45 <Ampera> I'm looking right at it, in the photo
31:00 <Ampera> it's just not an IO shield that snaps in, this one is supposed to screw in
31:03 <Halcyon> The uncovered slot next to your PCI card?
31:05 <Ampera> my case just doesn't have the holes for it to do that
31:23 <Ampera> I've never heard that called an IO shield
31:27 <Ampera> that's a slot cover
31:32 <Halcyon> Sure, if you like
31:47 <Halcyon> I'd also mount both fans on the case, instead of the CPUs but meh
31:47 <Ampera> well IO shield has a specific meaning for the shield that goes in front of the ATX IO ports
31:51 <Halcyon> Whatever does the job
31:52 <Ampera> I did
31:56 <Ampera> the heatsinks overheated
32:12 <Ampera> there are three 120mm fans at what would be the bottom of this shot, just out of view
32:31 <Ampera> at some point I may replace them with decent noctuas, but that'd mean about a hundred bucks worth of fans all around
32:42 <Ampera> I might do that /and/ buy some 60mm fans to stick on the heatsinks
32:50 <Ampera> That's what I think I love the most about this board
32:53 <Ampera> so many fan headers
33:03 <Halcyon> Yeh seems fine to me
33:04 <gnif> sharing experience is not nitpicking... I think the build is good for the most part
33:20 <gnif> better then some of the jank I have thrown together in the past
33:20 <Halcyon> I mean you could get all anal with your cable management, but fuck it, that's neat enough
33:20 <Ampera> gnif, yes but hyperbole can be in jest.
33:30 <EEVBot> [Twitter] - eevblog - RT @scale_banana: Imagine nothing between yourself and Earth while traveling at 17,000 mph (27,360 km/h). https://t.co/aPZp3UlySy
33:35 <Ampera> haha, that's the second best cable management I've ever done
33:44 <Halcyon> As Dave would say "Good enough for 'Straya"
34:08 <Ampera> I /was/ gonna make custom cables, but I ordered the wrong terminals for the Mate-N-Lock connectors, so I can't
34:17 <gnif> Can't tell though if you put hearsink compound on those chips... or if you put it in the socket.
34:19 <gnif> :P
34:45 <Halcyon> I love Supermicro boards
34:51 <Ampera> no I squirted some gallium straight into the socket, then put the CPU on it
34:51 <Halcyon> They are plain, but they are sexy at the same time
35:00 <Ampera> is fine
35:05 <gnif> https://qph.fs.quoracdn.net/main-qimg-9f6517bc9d1a8192b2441ffcad841dda
35:20 <Ampera> now that's what I call a squirt
35:36 <Halcyon> Oh no
35:37 <Halcyon> ROFL
35:43 <Ampera> The biggest irritation was figuring out why it wouldn't POST with the X5650's in
35:47 <gnif> I hate Supermicro boards... their KVM interfaces totally suck balls
36:14 <Halcyon> The IPMI ?
36:15 <Ampera> turns out the board originally only supported nehalem CPUs at first, with westmere coming in a BIOS update
36:24 <gnif> yeah, IPMI, it sucks
36:41 <Halcyon> Yeh the old IPMI interfaces (the Java based ones) sucked, but hey, did the job at a pinch
36:42 <Ampera> I haven't tried the IPMI, as I haven't figured quite how to configure it, not that I've tried pretty much at all
36:50 <Halcyon> Certainly not as polished as some of the others
36:57 <Ampera> HP's iLO is awesome
37:12 <Ampera> but any IPMI literally can't be worse than what I had before
37:34 <Ampera> where I had no out of band management, and the machine couldn't POST unassisted
37:37 <Halcyon> For a homelab though, I don't even use IPMI, it's not connected, same as with my Dell and IBM servers.
37:48 <Halcyon> I literally just use a hardware KVM and walk up to the rack
37:57 <Ampera> that's because your rack isn't in a basement
38:02 <Halcyon> Also true
38:06 <Halcyon> But even if it was *shrug*
38:07 <Ampera> I'd much rather sit up here at my desk than be in the hole under the stairs
38:28 <gnif> well when your server is in another country a hardware KVM is useless
38:30 <Ampera> It's not necessary for most things, though, since everything I do is over ssh anyways
38:37 <Halcyon> You are correct gnif
38:47 <Halcyon> But I'm specifically talking about our use case
38:57 <Ampera> Halcyon, did you notice that card all the way to the left?
39:00 <gnif> pfft, my use case is the only one that matters :P
39:04 <Halcyon> Look, SuperO IPMI isn't the worst I've used. It's clunky, sure, but it works.
39:20 <Halcyon> That's your AXO card yeh?
39:28 <Ampera> honestly I'm blown away if it can turn on/off the machine remotely
39:35 <Ampera> AXO?
39:51 <Ampera> it probably is, but I haven't heard that specific term before
39:57 <Ampera> since there are half a dozen that could describe the card
40:01 <gnif> until you start to add latency to it... the supermicro applet is super super dumb and sends key down/up events separately... so you type a letter, and you get 10 of them
40:13 <Halcyon> Sorry was thinking of something else
40:22 <Halcyon> FHX/FXO
40:22 <Ampera> I call it an ATA card
40:26 <Halcyon> FSX
40:30 <Halcyon> Fuck it
40:30 <Ampera> FXS
40:31 <Halcyon> I give up
40:38 <Halcyon> My brain is broken
40:44 <gnif> FSX/FXO IIRC
40:45 <Ampera> drink more, that way at least it's funnier
40:48 <Ampera> no
40:50 <Ampera> FXS/FXO
40:51 <Halcyon> FXS/FXO
40:53 <Halcyon> There we go
40:56 <gnif> lol
41:02 <Halcyon> Brain and hands are in sync again
41:04 <Ampera> Foreign Exchange Subscriber/Office
41:14 <Ampera> this one is three FXS one FXO
41:44 <Ampera> at some point I'm going to tear out the two pair CAT3 in the walls out and replace it with 4 pair CAT6, then run the phones properly
41:48 <gnif> I had one of these: https://i.ebayimg.com/images/g/PQwAAOSw8Sde1cvH/s-l1600.jpg
41:59 <Ampera> Basically what I have
42:04 <Ampera> except mine sadly doesn't have the aux power
42:07 <Ampera> so the REN is fucked
42:14 <Ampera> can't even ring a single Model 500
42:30 <Halcyon> You could get a booster?
42:37 <Ampera> not for under a hundred bucks
42:42 <gnif> I just remember how much fun it wasn't to make dahdi work on early kernels
42:47 <Ampera> I have no fucking clue why they go for that much
42:48 <Ampera> but they do
42:59 <Ampera> gnif, it's even worse on newer kernels
43:01 <Ampera> where it doesn't work at all
43:08 <Ampera> god save FreeBSD
43:13 <Ampera> which doesn't care
43:40 <Ampera> my PBX is effectively FreeBSD only, as otherwise I have to dig up some dinosaur distro running LTS44, then compile the drivers manually, and stick them in
43:51 <gnif> While I think PSTN has it's advantages over VoIP, from a management POV I am glad to see it go
43:54 <Ampera> with FreeBSD I can just compile a package out of ports, and boom, drivers all the way up to 12.2
44:04 <Ampera> well you're gonna love this
44:18 <Ampera> the reason I have an FXO on this card is because it connects to an Obi200
44:22 <Ampera> so I can use GV as a provider
45:05 <gnif> why not just connect asterisk directly?
45:11 <Ampera> When I'm in my own house, with my own phones, I'll set up a real SIP provider (when I am so bored trying to figure out how the /fuck/ asterisk is supposed to work is "fun")
45:12 <gnif> those things are super easy to get into
45:13 <Ampera> because fuck asterisk
45:19 <Ampera> it's a pain in the ass
45:22 <gnif> or a voip client then, whatever
45:24 <Ampera> the docs are shit
45:33 <Ampera> because afaik asterisk has near exclusive support for DAHDI
45:40 <Ampera> if there's something better, please let me know
45:47 <gnif> I used asterisk exclusively with DAHDI
46:05 <Ampera> I'm sure it works, but I also get the impression they don't want you to figure out how for free
46:32 <gnif> iirc it's pretty easy, single config to define your endpoints
46:41 <Ampera> No that part is easy
46:44 <Ampera> SIP config is not
47:01 <Ampera> but just using it as an analog exchange is easy
47:07 <gnif> yeah, asterisk spi config is like pulling teeth.... your own teeth
47:16 <gnif> *sip
47:21 <Ampera> hence, the obi200, hence it's just a glorified analog exchange
47:26 Join: coppice ([email protected]) to #EEVblog
47:43 <Ampera> that being said, I figured out why the system the PBX was installed on was so unstable
47:45 <gnif> i'd still hack it and get your details from it
48:03 <Ampera> well that'd be hard, since it wasn't even on the internet
48:05 <gnif> your call quality would go right up due to the removal of the double format conversions, etc
48:13 <Ampera> or the network
48:27 <Ampera> literally because it dropped off one day and I was too lazy to actually go fix it
48:35 <gnif> just dump it's eeprom
48:55 <Ampera> but anyways, out of all things, it was the SATA SSD that was dying
48:58 <gnif> they are literally a squashfs linux image
48:59 <Ampera> it wasn't old, it was just cheap
49:13 <Ampera> the ATA card?
49:17 <gnif> the obi200
49:23 <Ampera> ohhhh
49:31 <Ampera> no yeah I imagine you could break right into that
50:00 <coppice> obi1 was the best
50:03 <gnif> I did one for a friend last week... took about 20 minutes to dump out the management password the provider use
50:10 <Ampera> I'm just hoping you at least need network access to do it
50:24 <Ampera> and can't just walk up to it over the phone and figure out the magic code needed to get in over WAN somehow
50:34 <gnif> 15 mins of which was dumping the eeprom
51:22 <coppice> and then search for "The secret password is"
51:30 * Halcyon takes a dump on Ampera and wanders off to bed
51:33 <Halcyon> I'm wreaked guys
51:45 <Ampera> good night my lysdexic friend!
51:51 <Halcyon> *wrecked
51:51 <gnif> go have some wine and get some rest Halcyon :)
51:53 <Halcyon> Yep
52:02 <Halcyon> I only get a 2 day weekend this week :(
52:11 <Halcyon> And have to be at work 0300 on Monday and Tuesday >:(
52:24 <gnif> did they specify which timezone?
52:26 <coppice> Ampera: He is wreaked. He smells really bad.
52:31 <Ampera> hahaha
52:42 <Halcyon> I smell minty coppice, I had a shower when I got home :P
52:57 <Ampera> unacceptable, irish spring only
53:02 <Ampera> otherwise you're not a real homo
53:03 <Halcyon> And I believe that's "reek"
53:11 <Halcyon> Irish spring?!
53:21 <Ampera> old spice is also acceptable
53:32 <Halcyon> I'm not geriatric!
53:40 <Ampera> so in a couple years then?
53:50 <Ampera> <3
53:56 <Halcyon> I wear Issey Miyake
54:01 <Halcyon> It's my fave
54:08 <gnif> yeah!, he is beyond a geriatric!
54:16 <Halcyon> You're my age gnif !
54:20 <gnif> lol, I know
54:24 <Ampera> I don't have a sense of smell
54:29 <Ampera> so I have no horse in this race
54:49 <Ampera> You're both tottering on ancient
54:55 <gnif> so that's why he smells so bad
54:56 <Ampera> gnif just happens to be cooler than you
55:03 <Halcyon> Does he?
55:22 <gnif> I have him fooled....
55:25 <Halcyon> Well that's fine. I'm happy not to be one of the "cool" kids
55:36 <Halcyon> I'm a homo, that'll do me fine.
56:10 <Ampera> So you're saying you're cool with being a bottom?
56:10 <Ampera> nice
56:35 * steve30 pets Halcyon 
56:49 <gnif> aren't we all Homo erectus?
56:56 <Ampera> I'm not, I don't get those anymore
56:57 <Ampera> thankfully
57:05 <gnif> lol
57:06 <Ampera> they're a pain in the dick
57:32 <Halcyon> Ampera doesn't know what to do with his yet
57:47 <gnif> I am off too guys, been nice (I think?) chatting :)
57:52 <Ampera> I'm just holding onto it for a friend, it's not mine
57:56 <EEVBot> [Twitter] - eevblog - What sucker paid $3M for this overcapitalised wankery in the cheap old part of Baulkham Hills?… https://t.co/fyxUqDja5I
57:57 <Ampera> have a good life
57:59 <Halcyon> I apologise for Ampera, gnif
58:00 <Ampera> or don't, I can only ask
58:19 <Ampera> You don't own me. You don't send me nearly enough free shit in the mail to claim that!
58:28 <Halcyon> Fuck off I don't!
58:29 <Halcyon> :P
58:41 <Ampera> <3 <3 <3
58:44 <Halcyon> Also, I'm not your sugar daddy
58:53 <Ampera> because you're more bitterant than sugar
59:01 <Halcyon> Still...
59:11 <Ampera> again with the alcohol
59:27 <Halcyon> I'm going to bed
59:29 <Ampera> is distillation of spirits illegal there?
59:30 <Halcyon> Love you
59:33 <Ampera> night
59:36 <Halcyon> *shrug* I dunno
59:47 <gnif> I love both of my children, Halcyon and the other one equally
59:54 <Halcyon> Hahaha
59:56 <Halcyon> That is so sweet
00:01 <Halcyon> I'll take that
00:21 * Halcyon is just glad he isn't "the other one"
00:44 <Halcyon> Anyway, really going this time.
00:51 <gnif> same, gnight guys
17:01 Quit: modrobert ([email protected]) Quit: Lost terminal
17:01 Quit: modrobert ([email protected]) Quit: Lost terminal
17:13 Join: modrobert ([email protected]) to #EEVblog
23:13 <Lemon> well, I dont get it
23:28 <Lemon> I have a continuity on the bare board, but when I assamble it, nope
25:45 <Lemon> the com port is wonky, but it sucks to replace as its a block of 4 shrouded connectors, that are in diagonal on top of that
27:14 Join: modrobert ([email protected]) to #EEVblog
28:44 Quit: Icedream ([email protected]) Quit: A lol made me boom.
44:00 Join: Icedream ([email protected]) to #EEVblog
46:50 <K> post some pics?
50:14 <hsn> https://youtube.com/shorts/ejoGrkiVxFc?feature=share
50:14 <hsn> This is the food i want today
51:40 <hsn> https://youtu.be/66Cg16VBp5Q
51:41 <EEVBot> [Title] - Youtube: مندي لحم يمني على أصوولوو في البرميل | Zainalkitchen
52:03 <Ampera> Snatched 48GB of DDR3 RDIMMs for 70 bucks.
52:25 <Ampera> I still think it's more than it should be, but it's a low enough price I'm not too upset about paying it
52:40 <Ampera> got 6 8GB DIMMs, so I should be able to double that if I find a good deal again
09:56 Join: Bird|otherbox ([email protected]) to #EEVblog
12:05 <Kuschelpony> hmmm, when i make my next berlin holiday that might get expensive past 100€ https://www.ebay-kleinanzeigen.de/s-anzeige/oszilloskop-roehre-d-13-520-gh
12:06 <EEVBot> [Title] - Error Page
12:31 <Kuschelpony> GH=P31 screen so that deep green
24:14 <Lord_of_nothing_> hmm error page?!
53:32 Join: coppice ([email protected]) to #EEVblog
05:54 <Kuschelpony> https://www.ebay-kleinanzeigen.de/s-anzeige/oszilloskop-roehre-d-13-520-gh/1697880361-168-3411
05:55 <EEVBot> [Title] - Error Page
05:59 <Kuschelpony> perhaps better
06:02 * steve30 lols
06:07 <steve30> I was just reading this article
06:15 <Kuschelpony> im trying to cut off the tracking IDs and such
06:17 <steve30> "Demi Lovato comes out as non-binary, changing pronouns to they/them: ‘It best represents the fluidity I feel’
06:17 <steve30> The pop star was praised by their fans after they shared the news on social media"
06:52 <steve30> The bottom of the article has a correction: "A previous version of this post included the wrong pronouns for Demi Lovato"
45:34 <electrohead> o/
52:12 <rust_collector> Kuschelpony don't worry about that message, it is just the bot being stupid
52:56 <Kuschelpony> oh well, i do consider it as an helpful hint to see how weird things webpages do...
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