// #eevblog — 2021-09-06
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00:03:02 <Ampera> I am currently being very not sure about what I want to do with my personal web cluster
00:03:15 <Ampera> I want to do load balancing, but I also don't
00:03:42 <Ampera> because the issue with load balancing is the number of different ways to sync webroots
00:05:07 <Ampera> The way I'd implement load balancing too is kinda dumb, as I intend to have both nodes in the same location and on the same hypervisor
00:05:25 <Ampera> but it's a good way for me to learn about how it's implemented
00:05:50 <Ampera> I get almost no traffic though, so just having the same web/db split I have now, maybe with a VM for reverse proxying, would do just fine
00:05:53 <Ampera> and eliminate having to sync anything
00:06:37 <Ampera> I could also just do webroot on NFS, and forget about multi-host resilience, simply taking backups for data consistency
00:14:17 Join: Kuschelpony ([email protected]) to #EEVblog
00:23:48 <arch> interesting article: https://ridleyengineering.com/images/phocadownload/1%20second%20stage%20filter%20design.pdf
00:46:36 Quit: Bird|otherbox ([email protected]) EOF from client
00:46:50 Join: Bird|otherbox ([email protected]) to #EEVblog
01:40:23 Quit: arch ([email protected]) Ping timeout: 121 seconds
02:05:36 Join: arch ([email protected]) to #EEVblog
02:14:35 Join: steve30 ([email protected]) to #EEVblog
02:14:35 Mode: (by ChanOP) +o steve30
02:38:21 <arch> does anyone know the answer to this question? the fuckwit on the bottom who answered was being rude to the guy instead of being helpful: https://electronics.stackexchange.com/questions/339618/differerent-connection-for-y-capacitor-emi-filter
02:38:22 <EEVBot> [Title] - switch mode power supply - Differerent connection for Y-capacitor (EMI filter) - Electrical Engineering Stack Exchange
02:42:45 <Kuschelpony> the reason to use an Y-capacirtor in the first place is the high frequeny noise that capacitively couples from the switching node on the transformer primary to the secondary
02:42:55 <Kuschelpony> that is shorted out somewhat by the y cap
02:43:39 <Kuschelpony> the usual placement of this capacitor is wit the mains-side leg to the positive end of the transformer becasuse its then earer to the transformer node where the noise happens
02:44:28 <Kuschelpony> if it would be connected to mains side main capacitor minus, the path for the noise current would be through the main capacitor and board trace loops, so it would have more impedance
02:44:31 <arch> i see
02:44:37 <electrohead> "Try to form a question starting with an upper case letter and ending with a question mark. "
02:44:40 <electrohead> Lmfao..
02:44:44 <Kuschelpony> on the low voltage side, ther is little difference
02:44:56 <electrohead> For how much I love stack overflow/exchange, I could never post on that site
02:45:30 <Kuschelpony> ah well, i dont care about stackexchange... just sometimes passively read over the valuable knowledge, but do not agree with their harsh tone
02:45:37 <electrohead> Yeah, same
02:45:41 <electrohead> Arrogant as fuck
02:45:52 <electrohead> The information is nice, but arrogant
02:49:41 <Kuschelpony> becasue they cultivate competition
02:50:16 <Kuschelpony> btw: the "right way" for an y-cap is the one that gives the least radiated emmissions
02:51:30 <Kuschelpony> i had sometimes seen ciscuits where the capacitor was connected to the secondary "hot" pin going to the rectifier diode, to get an antiphase noise signal that cancels out the one coupling capacitively through the transformer, but that requires an precise made transformer
02:57:16 <arch> Kuschelpony, is it better to place the X cap before the CM choke, or after? i was thinking after would be better if there was a sudden transient
02:57:50 <Kuschelpony> it must be as close as possible to the switchmode transformer, think mm away
02:58:12 <DHess_US> Just cleaned the dust filters on my newest PCs. I don't understand how people build new systems that lack dust filters.
02:58:49 <arch> the X capacitor? i know the bulk capacitor (i.e. uF range) should be as close to the switching trafo and mosfet. i was referring to the safety X cap, which i noticed tend to be near the AC input
02:58:50 <Kuschelpony> you want the common mode choke on the primary to be outside the inner converter. to choke the remaining noise current from leaving
02:58:58 <Kuschelpony> oh i read that as Y
02:59:36 <Kuschelpony> the X is sometimes before, sometimes behind and sometimes in both places, depending on the overall situation
02:59:41 <Kuschelpony> no simple rules
03:00:37 <arch> for example, this is my schematic: https://imgur.com/tv4Cups.png
03:17:16 Join: cheeseandchives ([email protected]) to #EEVblog
03:27:33 Join: watcher ([email protected]) to #EEVblog
03:32:54 <Kuschelpony> oh today would have been the 75th birthday of freddy mercury, singer of Queen
03:33:15 <watcher> i have heart that
03:33:58 <Kuschelpony> still waiting if imgur loads ... have connection problems to many websites the past days
03:34:13 <watcher> dns problem?
03:34:47 <Kuschelpony> maybe..
03:34:50 <Kuschelpony> ah now!
03:35:07 <Kuschelpony> we just need to talk about :)
03:35:09 <watcher> change your dns to 1.1.1.1
03:36:34 <Kuschelpony> hmm, the schematic looks very reasonable to me
03:37:33 <Kuschelpony> maybe connecting c1 to vdd very close to the ic pin 2 instead of vss could give some advantage, but that needs to be checked on the board which is less noisier
03:50:32 <arch> C1 is for the RCD snubber network, not bulk cap
03:50:42 <Kuschelpony> yes
03:51:08 <arch> since im using 1206 resistors, i put 4 of them in series (for better breakdown voltage safety)
03:51:12 <Kuschelpony> i meant return the#at to pin 2 = Vss to get a smaller loop for the switched current
03:51:23 <Kuschelpony> good safety margin
03:51:46 <arch> and i also have a can of spray on polyurethane, which i will use too
03:51:54 <Kuschelpony> yes
03:52:35 <Kuschelpony> what i meant with the capacitor is, look at the first moment of when the IC interrupts the primary current
03:53:04 <Kuschelpony> the first spike that the snubber C has to take should flow the shortest path away from the previous route
03:53:09 <arch> ah i see what you mean. instead of protecting the coil, it's better to protect the switching element itself
03:53:32 <Kuschelpony> its not exactly about "protection" but about catching the transient
03:53:38 <Kuschelpony> very similar
03:54:03 <Kuschelpony> i just think these things alwys in current loops and their surface that you want to make as small as possible
03:54:16 Quit: watcher ([email protected]) Quit: i'am out
03:54:17 <arch> good point
03:55:07 <Kuschelpony> if someone else has somethign to add, please talk as well
03:55:27 <Kuschelpony> i am surely not the expert, just a hobby tinkerer with deep analytical mind and some decades of experience
03:56:27 <arch> that is worth more than you think hehe
03:58:07 <arch> hmm, correct me if i am wrong, but having it connected the way i have in that schematic also partially recovers the energy in the leakage inductance and returns it to the bulk cap, no?
03:58:20 <arch> as opposed to, if you connected it between drain source, it would be completely dissipated
03:58:43 <arch> completely dissipated as heat*
03:59:42 <Kuschelpony> sorry if i was misunderstood, the resistors stay the same way to recover partially the energy, just the capacitor relocated to catch the spikes with less loop area
04:01:40 <arch> i believe that way would decrease rise/fall times of the mosfet and lead to greater inefficiency. it would be less noisy however
04:01:47 <arch> sorr increase rise/fall times*
04:02:44 <Kuschelpony> hmm, no idea why it should change anything related to the mosfet
04:04:12 <arch> " For the most part, though, adding capacitance is not good. It adds 1/2 V^2 C loss, drops the switching efficency, and usually doesn't help with the waste energy"
04:07:29 <arch> which is why mosfets with low drain-source capacitance is really important for high voltage applications
05:31:14 Join: prometheus ([email protected]) to #EEVblog
07:02:46 <arch> hey, neat. i can get almost the full spec running it from 60VDC from my lab psu, according to the calcs
07:03:16 <arch> i actually have a topswitch board here which i was able to push out 5V 0.7A (it is rated for 5V 1A)
07:03:23 <arch> from 60VDC from my lab psu
07:04:13 <arch> granted the input capacitor got pretty warm, but it works
07:11:53 Quit: Kuschelpony ([email protected]) Ping timeout: 121 seconds
08:33:49 Quit: arch ([email protected]) Connection closed
08:48:04 Quit: clarkos ([email protected]) Ping timeout: 121 seconds
09:03:26 <electrohead> I have fell in love with eggdrop.
09:08:22 Join: Nothing\ (~Shmendrick@cpe9050ca20a183-cm9050ca20a180.cpe.net.cable.rogers.com) to #EEVblog
09:10:40 <Nothing\> lol man
09:10:44 <Nothing\> i broke my pipe last night
09:10:59 <Nothing\> nodded off while i was having a smoke RIGHT before i was gonna go straight to bed
09:11:13 <Nothing\> figured i'll have a quick smoke then go to bed, but bed came to me lol
09:11:13 <rust_collector> hey allthepeople
09:11:27 <Nothing\> but inside the pipe was a chunk of tar about the size of a golfball
09:11:31 <Nothing\> hey rust_collector
09:11:34 <rust_collector> and have fun. I am going to work
09:11:37 <Nothing\> how's it hangin?
09:11:42 <rust_collector> eeh
09:11:43 <Nothing\> ah i see
09:11:44 <rust_collector> well
09:11:50 <Nothing\> well i hope you have fun
09:11:58 <rust_collector> NEVER!
09:12:37 <rust_collector> https://www.youtube.com/watch?v=f8YOT5f1wVs
09:12:38 <EEVBot> [Title] - Youtube: Amon Amarth - Twilight of the Thunder God (FULL ALBUM)
09:12:39 <Nothing\> but i was thinking i should make one of those videos where i make a mock-up lung with cotton balls stuffed in a jar and pass cannabis smoke through it to show how the tar collects in it. Like those anti-cigarette videos do
09:12:51 <Nothing\> because so many people seem to think cannabis is perfectly fine for you
09:13:18 <Nothing\> when in reality, at least from my experience, the smoke has way more tar and causes way more damage than cigarettes
09:13:36 <rust_collector> yeah, it is organic, just like tobacco. so it is prefectly safe
09:13:49 <rust_collector> ok, enjoy
09:14:10 <Nothing\> the cancer thing's up for debate, but i posed to my doctor that the chronic irritation could lead to hyperplasias, which eventually form into cancer. Like rectal polyps would be a form of hyperplasia. And he agreed the mechanism sounded plausible.
09:15:16 <Nothing\> so just watch, in 20-30 years we'll see a sudden and dramatic rise in lung cancer/emphysema/obstructive lung disease cases
09:15:36 <Nothing\> with legalization happening everywhere
09:28:02 <Nothing\> what sort of algorithm would i need to give an n% chance of something happening. Like say I want a program that lists 100 integers that are either 0 or 1 but i want only a 5% chance of it being a 1 but i also want the possibility that no 1s will show up at all. So I guess a 5% chance would apply for each individual "roll" rather than the series as a whole. If that makes sense.
09:28:15 <Nothing\> it's not the easiest concept to articulate and thus not the easiest to google
09:29:20 <Nothing\> i'm sure there's an algorithm with a name that does this
09:39:09 <DHess_US> https://pbs.twimg.com/media/EqUw6aPXYAMo-dA?format=jpg&name=900x900
09:42:11 <T3sl4> Nothing\: independent weighted probability, just randf() < 0.05f
09:58:55 <Nothing\> awesome thanks
09:59:11 <Nothing\> i'll get to work checking these out and trying them
10:00:00 * Ampera hugs Nothing\
10:00:04 * electrohead films
10:00:20 * Ampera breaks electrohead's film camera, gets him a digital one instead
10:00:33 * electrohead films that as well
10:01:09 <Ampera> how are you doing electrohead
10:01:31 <electrohead> good, drowning in eggdrop code/scripts
10:01:34 <electrohead> you?
10:01:44 <Ampera> drowning in eggdrop soup
10:02:21 <electrohead> lol
10:05:57 Join: Octane ([email protected]) to #EEVblog
10:07:50 Quit: Octane_ ([email protected]) Ping timeout: 121 seconds
11:02:24 <Halcyon> Morning bitches, morning everyone else
11:03:40 <electrohead> What category do I fall under?
11:04:19 <Halcyon> You're in your own special category dickhead :P
11:05:11 <electrohead> And what category is that, called?
11:05:13 <electrohead> Lol
11:05:48 <Ampera> dickhead
11:05:52 <Halcyon> Exactly
11:06:59 <electrohead> hahahaha
11:07:10 * electrohead slaps Ampera with a head of a dick
11:07:49 <Halcyon> :P
11:08:59 * electrohead makes T3sl4 film
11:27:37 <Ampera> how are you doing Halcyon
11:29:26 <Ampera> alright well fuck you then
11:29:27 <Ampera> prick
11:30:06 <Halcyon> I was about to go poop
11:30:15 <Halcyon> You know you have that effect on me
11:30:26 <Halcyon> But I'm alright, how are you?
11:30:36 <Ampera> busting for a piss
11:30:40 <Ampera> but too lazy to go take one
11:30:44 <Halcyon> Bahaha
11:32:27 Join: clarkos ([email protected]) to #EEVblog
11:32:27 Quit: clarkos ([email protected]) Changing hosts
11:32:28 Join: clarkos ([email protected]) to #EEVblog
11:34:51 <electrohead> Just let loose in your chair?
11:34:54 <electrohead> It'll dry up
11:35:00 <Ampera> not if it's already wet
11:35:05 <Halcyon> Gross
11:41:23 <electrohead> https://v.redd.it/t05duc8v2sl71
11:41:32 <electrohead> nsfw?
11:41:40 <electrohead> no nudity, just.. beyond stupid
11:44:07 <Halcyon> What a fucking genius
11:52:24 <electrohead> Alright, I'm heading to bed, have a good day/night o/
11:52:59 <Halcyon> Cya
11:53:25 <Ampera> I love you
11:55:42 <Halcyon> https://twitter.com/TomLawrenceTech/status/1434508140578476033
11:55:46 <Halcyon> Heheh that's cute
11:56:04 <Ampera> I hate people who do that
11:56:13 <Halcyon> You're no fun
11:56:13 <Ampera> it usually means the rest of the site's right about to give my GPU a panic attack
11:56:30 <Ampera> Well I said I loved you and you didn't even respond
11:56:34 <Ampera> so who's the bitch now
11:56:38 <Halcyon> No... I saw it :P
11:56:48 <Ampera> dick
11:56:50 * Halcyon hugs Ampera
11:56:55 * Ampera hugs Halcyon's dick
11:56:59 <Halcyon> OK, I need to go to the bathroom, back shortly
11:57:18 <Ampera> I guess I'll go too
11:57:25 <Ampera> we can think about each other while we're on the toilet
11:57:42 <Halcyon> Hahahaha
11:57:46 <Halcyon> You're a strange one
12:00:27 <Ampera> If only you weren't gay
12:00:30 <Ampera> then we might really have something
12:00:31 <Ampera> :?
12:00:33 <Ampera> er, :/
12:05:13 Join: arch ([email protected]) to #EEVblog
12:05:20 <Ampera> I LOVE YOU
12:05:21 <Ampera> <3
12:06:52 <arch> aww, i love you too Ampera
12:07:05 <Ampera> how are you doing arch
12:07:10 <Ampera> how is agony in NYC
12:07:28 * T3sl4 licks Ampera
12:07:31 <arch> pretty good. agony as usual. loud neighbors, drugdealers, druggies, and so on
12:07:36 * Ampera cheeses T3sl4
12:07:59 <T3sl4> swisspicious
12:08:14 <Ampera> how are you doing T3sl4
12:08:27 <T3sl4> i'm alright
12:08:51 <arch> hmm let me swap out this topswitch on my donor board with the next higher up model to see if i can squeeze out some more amps on the same transformer, or if it saturates and burns out
12:08:54 <T3sl4> and you?
12:09:09 * T3sl4 saturates arch, in urine
12:09:16 <Ampera> Existentially conflicted and in awe at the pain and futility of life
12:09:29 <Ampera> Overwhelmed with anxiety and depraved with anguish
12:09:35 <T3sl4> nice, nice
12:10:01 <Ampera> also wondering what I should do for a web cluster
12:10:46 <T3sl4> kernel custer?
12:11:42 <Ampera> I'm thinking of doing load balancing, but I'm debating if I should even bother, and if so, how to implement webroot sync
12:12:09 <arch> im waiting for a intel 4 port gigabit switch bracket to come from china. should only take two months...
12:12:19 <T3sl4> i can't begin to fathom what kinds of things you network people think you're doing, with the 64+ ch routers and gigabits and load balancing
12:12:41 <Ampera> this is really all just on one hypervisor
12:12:42 <arch> that's literally the only thing preventing me from making my Lenovo Thinkcentre Tiny M720Q router/vm machine
12:12:43 <T3sl4> my stupid desktop is more than enough for my website, with occasional drops reported for one high frequency page
12:12:51 <Ampera> it's the decision between two nginx VMs or one nginx VM
12:12:57 <arch> probably because i was wget dumping again T3sl4 :D
12:13:05 <Ampera> is your website even dynamic though?
12:13:28 <T3sl4> even if it were, what would i be doing that's any more than instant?
12:13:28 <arch> enjineers don't care about dynamic web pages. they get by fine with html on vim
12:13:33 <Ampera> it's also not necessarily about adequate performance, rather about learning how to set this stuff up
12:13:43 <T3sl4> vim? you pervert
12:14:06 <arch> although i am a fan of gnu utils, i prefer vim over emacs
12:14:17 <arch> nano is for losers
12:14:18 * T3sl4 <3 Notepad++
12:14:20 <Ampera> my main gripe with vim is it's layout is geared toward touch typists
12:14:27 <Ampera> *its
12:14:46 <Ampera> I have entirely different home keys as opposed to normal, so vim is just weird
12:14:53 <Ampera> I've used emacs, and have never been very impressed with it
12:14:57 <Ampera> nano does everything I need most of the time
12:15:27 <arch> does stock nano even have syntax highlighting for common langs?
12:15:36 <arch> lemme see myself...
12:15:38 <Ampera> yes
12:15:44 <Ampera> though I don't really need syntax highlighting
12:15:47 <Ampera> it's not that important
12:15:59 <arch> o yea, it does
12:16:09 <Ampera> I haven't bothered to switch it on for most of my machines
12:16:35 <Ampera> I do use vscode quite a bit, but that's because I use .NET for work a decent amount
12:17:38 <arch> i use VSCodium, which is a fork without all the tracking and shit, and it comes in appimage too. pretty cool
12:18:01 <Ampera> I use the official microsoft release since it's the only one that seemingly works right
12:18:10 <Ampera> it still barely fucking works, but it's better than nothing
12:18:21 <arch> bill gates now knows what kinda hentai you watch
12:18:27 <Ampera> I have never watched hentai
12:18:35 <Ampera> I don't even really watch porn
12:18:39 <arch> that's what they all say
12:18:52 <Ampera> I read and write erotic literature
12:18:56 <Ampera> and enjoy erotic artwork
12:19:06 <arch> understandable, have a nice day
12:19:30 <Ampera> electrohead has harassed me about using vim
12:19:38 <Ampera> but I can't be fucked to sit down and try to learn it
12:19:44 <Ampera> especially when it's solving a problem I don't have
12:20:20 <T3sl4> arch: VScopium
12:20:45 <Ampera> VScodeine
12:22:22 <T3sl4> Opiate? thats a good album by VSTools
12:31:43 <arch> i love these TI boost convs that can take from 0.9V and above and operate down to 0.5V. makes powering my 555 timer projects a treat. and i save old alkaline batteries like that
12:32:00 <arch> outputs 5V at a few dozen mA, perfect
12:32:41 <arch> and it occupies bugger all space, like 5mm by 4mm for the whole switching section
12:34:27 <arch> back when i used to work in an office, i used to collect the dead alkaline bats. i still have a few dozen of them. they were used in wireless mice and kbs, which draw significantly more power
12:38:03 * T3sl4 buggers arch
12:38:36 * arch boogers T3sl4's shirt
12:38:46 <T3sl4> mine's worse
12:39:12 <arch> oh yea.. well, your're ugly
12:39:18 <arch> :3
12:42:42 <arch> https://www.youtube.com/watch?v=oZRKozAzZmY
12:42:42 <EEVBot> [Title] - Youtube: Meet the Clinically Depressed Heavy
12:50:07 Join: DogWomble_ ([email protected]) to #EEVblog
12:50:56 Quit: DogWomble ([email protected]) Ping timeout: 121 seconds
13:07:03 <arch> before i leave for the night, let me paste a screenshot of the ripple on a topswitch 5V output which has a 470uF cap
13:07:56 <arch> https://i.imgur.com/XCC8xVs.png
13:08:28 <arch> drawing 0.77A, that's the ripple. ~400mV
13:08:55 <arch> granted, i am powering this from 63VDC instead of from mains line, but nonetheless. load regulation is on point, and the conv is in CCM
13:09:25 <arch> LNK364, rated for 4W continuous; im getting ~3.7W from 63VDC. not bad at all
13:10:08 <arch> let me pop on a 220uF alum poly cap on it and see what happens
13:11:53 <arch> should be much lesser, hopefully, as it's one of those panasonic series, i think 9mOhm esr
13:15:25 Join: Kuschelpony ([email protected]) to #EEVblog
13:15:59 <arch> interesting waveform. it reduced the vpp by half, even though i only added half the value of the original in parallel
13:16:59 <arch> https://i.imgur.com/4q2VAO6.png
13:17:26 <Kuschelpony> good morning from german timezone
13:17:36 <arch> hi
13:17:43 <arch> i am just running a small experiment before going to bed
13:17:50 <arch> https://imgur.com/a/aP3bwdS
13:17:50 <EEVBot> [Title] - Imgur: The magic of the Internet
13:18:12 <Kuschelpony> i need to take a holiday again today, still on train strike and zero connections to work the next three hourse
13:18:30 <arch> there is a LNK364 board that i salvaged from an old microwave oven, which has 5V and 12V outputs. i have attached it to my lab PSU at 63V. and on the 5V side, i put a constant current load of 0.77A
13:19:05 <arch> and im just measuring the ripple. seems awful. good thing i put a post LC filter on my board im working on right now
13:19:07 <Kuschelpony> for your low voltage experiments yesterday, the most wide input voltage range that i know was an philips CRT tv that ran fine starting at 35V AC
13:19:27 <Kuschelpony> yep had rewad thois beforefaling asleep
13:19:32 <Kuschelpony> read
13:21:07 <arch> i think these 400mV pp ripple don't really matter for some devices, like microcontrollers. they operate just fine from 3.3V
13:21:37 <Kuschelpony> hmm, good question, i have no experience with moder mikrocontrollers
13:21:48 <Kuschelpony> oldschool cmos would have been fine
13:22:11 <EEVBot> [Twitter] - eevblog - Refinement: Create specific international airstrips two weeks hike from the nearest community. Remote broadcast it… https://t.co/ZWgyhgvzpd
13:22:33 <arch> the attiny85 for example is totally fine with 4.5V at 20MHz; even lesser like i believe 3V gets you 8MHz
13:23:26 <Kuschelpony> right about the static voltage limits, im not sure what can be messed up wit the dynmaic ripple
13:23:45 <Kuschelpony> saying again, if anyone here knows betetr then please write a note
13:24:02 <arch> anyway, fun experiment. good research for my build. i have just started the general placement: https://imgur.com/KBzk7As.png
13:25:07 <arch> the plan is to make it vertically mounted, so it will function kind of like a modular board
13:25:47 <arch> that is what the board from the microwave is. it has slits cut out, and you basically pop it in vertically, then solder the "tabs" on the bottom
13:26:01 <arch> very simple, ingenious idea
13:26:10 <Kuschelpony> interesting... opening the first image works fine, opening it again (same browser, just a minute later) gives me a page i have to switch on javascript or imgur would not work
13:26:23 <Kuschelpony> yes
13:27:11 <arch> of course, i will also aim to miniaturize it, while keeping primary-to-secondary isolation in mind
13:27:28 <arch> let me take a picture of the board that is my reference. the board i salvaged from the oven
13:27:46 <Kuschelpony> no rush
13:28:38 <Kuschelpony> im off soon, making breakfast and try to distract myself with a morning wlakout and stuff in the garden, to be not again sh.... grumpy about taking holidays while work piles up
13:30:17 <arch> https://i.imgur.com/iRY2uLN.jpg
13:30:54 <arch> i like the tabs idea. very neat. it was soldered in vertically
13:31:41 <arch> it uses an RCD clamp, and the secondary side diodes also have an RC snubber for the diodes
13:32:32 <arch> it's honestly pretty nicely designed. the back has more than adequate isolation distance, and there are even cutouts/slits to increase clearance (or is it creepance?)
13:32:46 <arch> and fully varnished/coated with something
13:32:54 <Kuschelpony> nice
13:33:56 <arch> this donor microwave i found down in the basement of my apartment. funnily enough, to fix my own microwave. it needed a new switch (the ones that detect if the door is closed). while i was at it, i salvaged the smps board (this). good deal. fixed my oven as well as gained a reference design
13:34:25 <arch> and also salvaged the magnetron. not sure what ill use it for, but i do have a spare magnetron too in case that dies
13:34:35 <Kuschelpony> :) thats the spirit of beeing an electronic tinkerer
13:34:46 <Kuschelpony> just a few years and you are like me :)
13:34:57 <arch> lol
13:35:33 <Kuschelpony> ten years ago i fixed my first microwave oven, an very unusual upright design, with an replacement magnetron, i keep it in storage for when needed again
13:36:19 <Kuschelpony> the magnetron came from the second microwave i had that failed for general mechanical sh.... construction bending out of any tolerances
13:36:49 <Kuschelpony> the third now also goes well since ten yeas, its a microwave&hotair combination that i use daily for my food
13:37:44 <arch> cool. i wonder if there are anything useful one can repurpose a magnetron for, excluding targeted brain frying weapons of course
13:38:19 <arch> it is technically a vacuum tube, if my understanding is correct. maybe some high powered radio gizmo?
13:38:34 <Kuschelpony> i remember a british ham doing that
13:39:15 <Kuschelpony> its basically a 2,45Ghz transmitter working somewhere 100 to 600w well, at lower powers the output is claimed to be very noisy
13:39:24 <arch> but the FCC wont let you be, and they'll try to shut you down on MTV
13:39:27 <Kuschelpony> like a laser diode
13:39:38 * arch wonders if anyone caught that reference
13:39:54 <Kuschelpony> -> not here
13:40:12 <Kuschelpony> for frequency modulation he wound a coil over the ceramic magnets inside
13:40:47 <arch> Kuschelpony, https://youtu.be/ZbytR2avo-0?t=71 next few seconds
13:40:49 <EEVBot> [Title] - Youtube: Eminem - Without Me (lyrics)
13:41:02 <Kuschelpony> sorry i dont waqtch videos
13:41:19 <arch> it's from an eminem song, but ok :p
13:42:50 <Kuschelpony> i just dont have the brain to handle videos
13:43:32 <T3sl4> arch: https://imgur.com/gallery/aZzkPbJ
13:43:33 <EEVBot> [Title] - Dang ol spiral out man - Album on Imgur
13:44:00 <arch> i dont get it :(
13:44:32 <arch> anyways, laters folks
13:45:00 <Kuschelpony> good night to you
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17:32:43 <EEVBot> [Twitter] - eevblog - NOT a good start... https://t.co/45pEV4IxCU
17:54:52 <K> hello sponges
18:00:32 <T3sl4> hello bobbit worm
18:02:10 * K bobbs some
18:25:55 <Halcyon> Hello
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20:42:19 <EEVBot> [Twitter] - eevblog - Metrology nerds assemble! Nanovolt design challenge - build and show your own nV-meter in 256 days https://t.co/0QWJn7HH4L
21:02:26 Quit: Kuschelpony ([email protected]) Ping timeout: 121 seconds
22:06:38 Topic Is: Official IRC channel of the EEVblog - www.eevblog.tv
22:06:38 Set By: (ChanOP) on: Wed May 05 05:42:37 2021
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