#eevblog - 2021-10-24 - AustNet Archive Project

// #eevblog — 2021-10-24

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« 2021-10-23 2021-10-25 »
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01:51 <Kuschelpony> https://xkcd.com/1123/
01:51 <EEVBot> [Title] - xkcd: The Universal Label
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50:07 <electrohead> o/
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47:10 <Nothing\> heyo
47:23 <Nothing\> hope everyone's doing great today
47:39 <Nothing\> in fact, you better be doing great today. OR ELSE....
47:46 * Nothing\ gives the stinkeye
47:53 <Kuschelpony> hmm?
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48:08 <Nothing\> Kuschelpony, i'm just saying you guys better be happy
48:13 <Nothing\> in a joking manner
48:24 <Nothing\> like "be happy or i'll kill you"
48:47 <Kuschelpony> for personal reasons i try to not give an honest reply but instead look for technical discussion
49:02 <Nothing\> to each their own
49:45 <Nothing\> all of the previous irc servers/communities i've been in have been really close knit communities.
50:14 <Nothing\> to the point where we even called eachother by our real names and would have regular group video chats and had a whole facebook group etc
51:15 <Nothing\> but i'll be honest, i never felt comfortable with it and was always on my guard since there was a lot of petty drama in that place. And with petty drama comes the risk of somebody messing with your real life.
51:49 <Kuschelpony> its ok
52:15 <Nothing\> especially considering i had/have a lot of family on facebook. So I was always worried that if I pissed off the wrong person, they'd start messing with my family or something.
52:16 <Kuschelpony> i just prefer to do somethign neutral and to distract me from the feeling of sh... cold dark winter months alone at home
52:29 <Kuschelpony> and i would never deal with facebook
52:59 <Nothing\> Or, the servers were centered around drugs (i was much younger at the time) but I always worried that somebody would relay information about my drug use to my family members
53:10 <rust_collector> Nothing\ one day, I might be there, and track you down. I will rub styrofoam on your windows at night, and hide in the shadows, you will never see me
53:39 <Nothing\> rust_collector, at least now i'll know who it is when somebody rubs styrofoam on my windows
53:50 <Kuschelpony> lol
54:40 <rust_collector> you can just hope it is me
54:43 <Nothing\> Kuschelpony, i deleted that account since then and took a 1 year hiatus from facebook before creating a new account. And on my new account, I just have family and nothing else. Since I really have no friends, and I've separated myself from all of those other communities cuz they were more toxic than a superfund site
55:20 <Nothing\> so now i just use facebook for keeping in touch with my german family and other family i'm not close to
56:28 <rust_collector> I only use facebook and such, to keep people away. I collect all of them there, and go off somewhere else
56:38 <Nothing\> i've made a couple of friend requests to people i considered true friends back in the old place, but none have reciprocated. I'm assuming they're either dead or have a life, since that's about the only 2 of 4 things that usually happens to people from that place
57:07 <Nothing\> they always wound up dead, in jail/prison, in a psych ward, or they'd get better and get their life together
57:31 <Nothing\> actually one thing i'll never forget from that drug chat place
58:27 <Nothing\> there was this guy that came in once all messed up on something. he was in rehab at the time and talking about it. So i tell the guy he needs to take this seriously and take advantage of the help he has available right now because it might not always be there etc etc
58:32 * electrohead tapes Nothing\ to the wall
58:39 <Nothing\> anyways, after talking to the guy for a few hours he left
58:57 <Nothing\> he came back a few weeks later and i forget what was said but i wound up friending him on facebook
59:18 <Nothing\> but long story short, he did wind up taking the rehab seriously and completed the program successfully
00:06 <Nothing\> went on to get more help after that. Got himself a gf, who turned into a wife. Got a great job, I forget doing what. Had some kids, bought a house and a car.
00:24 <Nothing\> i kept in touch for years and he never faltered. The guy was killing it.
00:52 <Nothing\> and I can't help but feel like if i hadn't had that talk with him that night, he might never have turned his life around
01:12 <Nothing\> or maybe he would have eventually and our talk was just the straw that broke the camel's back
01:52 <Nothing\> but yeah, even though that place was toxic as hell. There were some genuinely great moments that came out of it like that.
02:17 <Nothing\> Where I was actually able to make a difference in somebody's life. Despite distance and all that.
02:29 <Nothing\> also
02:35 * Nothing\ farts on electrohead 
02:39 <Nothing\> uh oh
02:42 <Nothing\> thta wasn't a fart
02:50 <Nothing\> soz m8
05:00 <Nothing\> HEY
05:04 <Nothing\> i just got a great idea
05:39 <Nothing\> whomever's in charge of the bot, ampera i think, should include a feature that allows you to put in a chip number and get back a link to a datasheet
06:09 <Nothing\> could just have it where it googles it and returns the url for the first hit or something
06:29 <rust_collector> oh god. that is actually not a bad idea,
06:31 <Nothing\> 9 times out of 10 that's usually the right one. Unless it's a particularly obscure chip.
06:49 <Nothing\> rust_collector, that means a lot coming from you
06:55 * Nothing\ wipes a tear from his eye
06:58 * Nothing\ sniffles
07:00 <rust_collector> sorry about that
07:04 <Nothing\> there appears to be something in my eye
07:35 <rust_collector> it would be weird if your eye was empty
08:02 <Nothing\> i'm just trying to think of ways to implement it other than having a database of every single chip that every exists or existed that the bot searches through
08:15 <Nothing\> rust_collector, some peoples' are
08:22 <Nothing\> i was actually just reading about the the other day
08:45 <Nothing\> a procedure in which they literally drain the vitreous humour (the jelly like fluid) out of your eye
09:10 <rust_collector> uh, whyyyy?
09:19 <Nothing\> i believe it was to relieve pressure
09:23 <Nothing\> in severe cases
09:25 <rust_collector> ah, right
09:40 <Nothing\> i dunno if you wanna see a picture or not
09:52 <rust_collector> nah, I have seen enough
10:07 <electrohead> Nothing\: I maintain the bot
10:20 <Nothing\> but it looks like something out of a sci-fi horror. Like, an eyeball with 2 or 3 instruments stuck into it. Including a large bore needle for the actual drainage.
10:26 <Nothing\> electrohead, oh really?
10:53 <rust_collector> he is 107% serious
10:56 <EEVBot> Yes, he is my owner. Obey me, muah ha ha \o/
10:58 <Nothing\> welp there's my suggestion. You can take it or leave it. It makes no nevermind to me. She's YOUR bot afterall.
11:12 <Nothing\> I just thought I'd offer a suggestion is all
11:19 <Nothing\> lol
11:35 <electrohead> I wonder if there is a site where you can search for datasheets, and it returns a PDF
11:41 <electrohead> err, that already exists *
11:54 <Nothing\> electrohead, i believe it does
12:01 <Nothing\> i get links from such sites once in a while
12:40 <Nothing\> plus for jellybeans like the 7400, 4000, and LM series, wikipedia has lists of every chip (as far as I know) in the series and includes a link to a datasheet
12:47 <Nothing\> i thought that might be a nice starting point
13:10 <Nothing\> but that's only really useful for hobbyists like me who like to use 40 year old chips
13:32 <Nothing\> electrohead, lemme see if i can find the site thta searches for datasheets for you
14:25 <Nothing\> here, see if this suits your needs
14:27 <Nothing\> https://www.alldatasheet.com/
14:28 <EEVBot> [Title] - ALLDATASHEET.COM - Datasheet search site for Electronic Components and Semiconductors and other semiconductors.
14:37 <Nothing\> i think there's at least one other site like this too
15:24 <Nothing\> electrohead, otherwise adding to my idea of using a google search and using the first result it returns
15:45 <Nothing\> i was just thinking, maybe have it use the first result it returns WHICH IS A PDF
15:54 <Nothing\> since datasheets are always in pdf format
16:29 <Nothing\> but then you have to check to make sure it actually is a datasheet linking to it
17:09 <Nothing\> or make sure that what the person searched for is actually a chip and that he diddn't just search some random gibberish and get a pdf from a hit on page 19
17:44 <Nothing\> interesting logistical problems, i must say.
25:33 <electrohead> I shall look into that one of these days, then
25:35 <electrohead> thanks man
26:12 <rust_collector> good luck, getting your slave at work interested in that...
26:57 <Nothing\> electrohead, cool. I appreciate you taking my suggestion seriously. I hope it pans out positively for you and the users.
27:38 <electrohead> I sent you a PM
27:40 <electrohead> rust_collector: lol
51:13 <Nothing\> hrm trying to decide what car to buy in gran turismo
51:33 <Nothing\> i just loaded up an old save cuz i wanted to laugh at the daihatsu "cars"
52:07 <Nothing\> or i have a copy of nhl 2015. I could pit team kazakhstan against team japan
53:13 <Nothing\> i should specific it's gran turismo 6
54:06 <Nothing\> got a viper now, but these things are hard to drive cuz they're FR so they spin out at the drop of a bloody hat
54:46 <rust_collector> you know you need a zastava
55:30 <Nothing\> i wonder if they have Ladas
55:37 <Nothing\> i've always wanted a Lada
55:38 <Nothing\> irl
55:53 <rust_collector> yeah, I have a thing for ladas
56:12 <electrohead> ladas or ladies?
56:15 <electrohead> :p
56:19 <rust_collector> ladas
56:20 <Nothing\> they have a petty comrehensive list of cars in this version
56:30 <Nothing\> they even have 2 cars that jay leno's garage built
56:44 <Nothing\> the one he built with a V12 from a tank in it
57:04 <Nothing\> and some other one that there was nothing remarkable to a layperson about
57:29 <Nothing\> hell they even let you buy go-karts in this one
57:39 <rust_collector> I think you called the zastava yugo over there
57:42 <Nothing\> and drive the buggy on the moon
58:40 <Nothing\> eww my ps3 controller needs to be cleaned
58:47 <Nothing\> thank god for dental picks
59:05 <rust_collector> get an ultrasonic cleaner?
59:49 <Nothing\> they're great for getting into the little nooks and crevices on a controller
00:39 <Nothing\> okay i'm having some... i guess you could call them hallucinations
00:43 <Nothing\> but they're very odd
01:49 <Nothing\> like while i was typing that thing about how great dental picks are and was typing the words "nooks and crevices" i literally saw the words 'nooks' and 'crevices' physically fighting with one another
02:03 <Nothing\> and got the dinstinct impression that crevices was superior somehow
02:14 <rust_collector> they are
02:21 <DHess_US> nooks are those pieces in the corners of the board.
02:27 <Nothing\> maybe i'm just tired
02:30 <DHess_US> They move sideways
03:04 <Nothing\> okay and i see a racist horse when i close my eyes
03:11 <Nothing\> who, ironically enough, is brown
05:50 <rust_collector> how do you know... uh, is it bald, and has a swastika tattooed somewhere?
06:34 <Nothing\> cuz it said the N word with a hard R
07:32 <rust_collector> you see things with audio, that is pretty good
07:51 <Nothing\> no it was a vision, not just a visual hallucination
07:54 <Nothing\> i had my eyes closed
07:56 <rust_collector> I am so old, I only see black and white things, with piano music
08:15 <Nothing\> actually it WAS in black and white lol
08:24 <Nothing\> so don't ask me how i knew the horse was brown
09:14 <Nothing\> just caught a glimpse of a man in honduras filling a trike up with petrol at a roadside convenience store
09:52 <Nothing\> he bought it in a glass bottle, it was colored and he poured the bottle into his trike's tank, paid and left
09:56 <Nothing\> or paid first, whatever
10:25 <Nothing\> i think i need to play gran turismo
10:42 <Nothing\> this seems like exactly the right state of mind to be in for driving anything
11:08 <Nothing\> ta ta
11:27 <rust_collector> hoo hoo lalala have a good trip in your excavator
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58:35 <Kuschelpony> humor https://www.physicsforums.com/attachments/_nc_ohc-sy2jcsvhswax9nk-nv-_nc_ht-scontent-dus1-1-jpg.290943/
00:02 <rust_collector> they always have some weird rules in sports....
01:21 <DHess_US> I know, right?
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02:48 * Ampera sends electrohead signal 16
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24:41 <Ampera> aka SIGHEIL
24:41 <Ampera> they removed that one from unix some time in the 40's...
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52:46 <Some_Person> Goodwill stuff; didn’t buy anything today: https://imgur.com/a/4jVKMCl
52:47 <EEVBot> [Title] - Imgur: The magic of the Internet
07:36 <EEVBot> [Twitter] - eevblog - NEW Video on EEVblog2! Fluke 87V uA Quirk #Shorts https://t.co/O50t7vmcZO
11:45 Topic Is: Official IRC channel of the EEVblog - www.eevblog.tv
11:45 Set By: (Halcyon) on: Fri Jan 24 20:18:27 2020
18:59 Quit: Sigyn ([email protected]) Quit: WeeChat 3.0.1
37:07 <EEVBot> [Twitter] - eevblog - RT @TheAmpHour: This week on the show, @ElectroBOOMGuy joins @eevblog to talk about his hobby and professional background, and how he got s…
38:52 <EEVBot> [Twitter] - eevblog - And the Audiophool bullshit product of the day award goes to: https://t.co/RVgN9tTNzA
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29:03 <Halcyon> Some_Person, you guys get all the cool electronics at your second hand shops
29:11 <Halcyon> To my knowledge we don't really have anything like that here
34:20 Quit: Nothing\ (~Shmendrick@cpe9050ca20a183-cm9050ca20a180.cpe.net.cable.rogers.com) Quit: Leaving
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35:27 <daddesio> anyone know how to send QAM signals over coax cable, without disturbing other signals on the line?
38:31 <DHess_US> That is what multiplexing is for. Use frequency division multiplexing. Problem solved.
39:33 <DHess_US> Or are you asking how to add another signal to a transmission line without disturbing existing signals?
39:35 <daddesio> yeah but like physically/electronically
39:43 <daddesio> The latter.
40:19 <DHess_US> Add a voltage in series, like with a transformer, or add a current in parallel.
40:32 <DHess_US> The later is easier.
40:52 <DHess_US> Drive the transmission line with a transconductance amplifier, which has a current output.
41:11 <DHess_US> Other signals see the transconductance amplifier's output as a high impedance and ignore it.
41:47 <DHess_US> While the transconductance amplifier sees for instance a 25 ohm load with a 50 ohm transmission line.
41:52 <daddesio> yeah I'm looking at diagrams of 10BASE2, and the devices are all connected in parallel to each other.
41:58 <daddesio> diagram: http://www.windowsnetworking.com/j_helmig/gifbasic/3pcthin.gif
42:17 <DHess_US> That is close to how 10base2 does it.
42:37 <daddesio> (I'm only using 10BASE2 as an example - I know that 10BASE2 only allows one device to talk at a time anyway)
42:44 <DHess_US> With 10base-2, each receiver is high impedance, so signals don't see it.
43:34 <DHess_US> But if a 10base-2 unit use a high impedance receiver and a high impedance (current) transmitter (transconductance output), then it could see and transmit at the same time.
44:04 <DHess_US> WTF? Is that rain?
44:40 <DHess_US> Suddenly, a wild Noah's flood appears!
46:27 <DHess_US> daddesio, I might know of an example circuit
47:46 <DHess_US> This is sort of the same idea, https://www.analog.com/en/technical-articles/adsl-line-driver-receiver-design-guide-part-one.html
47:48 <EEVBot> [Title] - ADSL Line Driver/Receiver Design Guide, Part 1 | Analog Devices
49:14 <daddesio> Nice, thanks
50:14 <daddesio> I'm guessing 1. there can't be any DC component to your signal and 2. only certain carrier frequencies are possible
50:27 <DHess_US> That isn't quite the same idea, but it shows how the receiver subtracts the transmitted signal so it can see the received signal.
50:43 <daddesio> maybe even 3. each device must use a different carrier frequency or something bad will happen?
50:43 <DHess_US> Not in that example, but nothing prevents having it operate down to DC.
50:45 * Ampera hugs Halcyon 
50:46 <Ampera> <3
51:20 Mode: (by ChanOP) -o Ampera
52:00 <DHess_US> Here is another example that operates down to DC, http://exvacuo.free.fr/div/Sciences/Dossiers/Electronique/CirculateursLF.pdf
52:05 <daddesio> Nice, so I wonder if you could use unmodulated voice signals
52:10 <daddesio> instead of QAM signals
52:19 <DHess_US> Sure, that is what a telephone "hybrid" does.
52:20 <daddesio> and if everyone's voices would just add together on the line
52:24 <DHess_US> yes
52:46 <DHess_US> https://en.wikipedia.org/wiki/Telephone_hybrid
52:47 <EEVBot> [Title] - Telephone hybrid - Wikipedia
55:15 <Ampera> </3
55:20 <Ampera> Halcyon has abandoned me
55:43 <Ampera> I'm going to go commit sudoku over this
57:21 <Halcyon> I have no
57:23 <Halcyon> not
57:27 <Ampera> LIES
57:34 <Ampera> if you hadn't, you'd be here right now talking to me and saying hi
57:36 <Ampera> LIAR
57:38 <Ampera> >:(
57:41 <Halcyon> I'm still cranky
58:15 <Ampera> try the APA's suggestion for stress relief
58:20 <Ampera> beat up a minority and blame them
58:21 <Ampera> Knock if off you kids, you're keeping me up
58:31 <Ampera> er, APA being the American Police Association
58:39 <Ampera> or Australia Police Association I suppose
01:54 <Halcyon> :P
02:03 <Halcyon> Could I just beat your meat furiously?
02:11 <Ampera> my meat is not a minority
02:23 <Ampera> there's lots of dicks just like it
02:29 <Ampera> not everyone has a small penis
02:32 <Ampera> it's perfectly normal
02:33 <Ampera> I swear
02:46 <electrohead> o/
02:51 <electrohead> yay for working late
03:12 <Halcyon> :P
03:59 <Ampera> how are you doing Halcyon
04:02 <Ampera> how is your birb
04:14 <Halcyon> Irritating, he has not shutup since 0700 this morning
04:24 <Ampera> one of my friends got a cockatiel a week or two ago
04:25 <Halcyon> Oh except for now, NOW he's quiet
04:25 <Ampera> it's dead
04:31 <Halcyon> Oh no :(
04:33 <Halcyon> What happened?
04:35 <Ampera> he killed it
04:44 <Ampera> apparently fed it wrong, food got in its lung, and it died
04:51 <Halcyon> Holy shit
04:54 <Halcyon> Poor thing :(
04:54 <Ampera> meh
04:59 <Ampera> he's killed before
05:04 <Ampera> my friend or the bird
05:06 <Halcyon> I hate seeing animals suffer. Even cats
05:10 <Halcyon> The bird
05:18 <Halcyon> I don't give two shits about your friend :P
05:27 <Ampera> my friend is an animal
05:29 <Ampera> he's from saudi arabia
05:35 <Halcyon> HAHAHAH
05:37 <Halcyon> That's harsh
05:45 <Halcyon> Are you suggesting he is a sand monkey?
05:46 <Ampera> the fact that you connected those completely unrelated sentences is your own racism
05:50 * steve30 pets Halcyon 
05:55 <Ampera> I made no such statement
06:01 <Halcyon> I know, I was asking
06:04 <Halcyon> Hello Steve :)
06:12 * Ampera pets steve30 
06:12 <steve30> meow
06:27 * Ampera feeds steve30 right, with a big plate of curry with a steaming pile of naan
06:49 * Ampera hugs electrohead 
06:54 <electrohead> DHess_US: your last link sent me down a nostalgic rabbit hole
06:55 <Ampera> I've been developing a way to sorta kinda make mediawiki multitenant
06:57 <Ampera> how are you doing sparkleguy
06:57 <Halcyon> I made naan yesterday
07:00 <Halcyon> From scratch
07:02 * electrohead blueboxes Ampera
07:08 <electrohead> good, just tired as fuck, my brain hurts
07:10 <electrohead> you?
07:23 <Ampera> I currently do admin for around 30 live video game wikis, some of them reasonably active
07:47 <Ampera> they're all their own independent mediawiki installs, with their own skins, configs, and extensions
08:02 <Ampera> so that means updates involves patching 30 different installs, and more in the future
08:51 <Ampera> with some FreeBSD hackery I've managed to design a way for them to all share the same install, with the only thing defining different tenants being 2-3 config files, the database, and nginx stuff
09:24 <Ampera> updates is simply a matter of making a new central install, and running some scripts to clone the dbs, update them, and them change everything over
15:44 <Ampera> Halcyon, should I have curry or steak tomorrow
16:17 <Halcyon> Both are good
16:28 <Halcyon> I'd pick curry, only because I'm craving it at the moment
16:37 <Ampera> steak it is
16:40 <Halcyon> :P
17:24 <Ampera> just paid off the credit card bill for my laptop
23:39 * jaymax blasts a 2.6mHz squee
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33:23 <steve30> Halcyon, this is an interesting youtube channel
33:24 <steve30> https://www.youtube.com/channel/UCpIDox2bTkCBG8-i82JEtnw/videos
33:47 <steve30> He reminds me of my old Biology teacher.
34:34 <Halcyon> I like his furniture
40:09 <steve30> Halcyon, I tried to activate my new windows 7 install by modem earlier but the telephone number was out of service
40:40 <steve30> So I had to call them and type the codes in on my DTMF phone
41:23 <Halcyon> Yeh I think that's been that way for years
41:35 <Halcyon> I always have to use the phone method
44:59 <steve30> however, it confirmed that the thinkpad's modem works :)
00:21 * electrohead covers jaymax in 2600 magazines
03:22 * T3sl4 covers electrohead in AR-15 magazines
03:34 * electrohead films
09:41 <EEVBot> [Twitter] - eevblog - For 2 Years, NASA Tested Deep Space Atomic Clock - Here's Why by @WhatDaMath https://t.co/rQvxXsNJ1R #LBRY via @OdyseeTeam
18:42 <daddesio> and I'm off into the wonderful world of current sources. thanks DHess_US
19:15 <DHess_US> sure
19:35 <DHess_US> For higher frequencies the output capacitance of the current source becomes very important.
19:39 * T3sl4 throws the kitchen sink at DHess_US
25:15 <Halcyon> YAY
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22:42 <EEVBot> [Twitter] - eevblog - Groan worthy name. I wonder, am I technically allowed to say Twitter sucks on Twitter? https://t.co/pwySAzDlMT https://t.co/0Uc1L8GNUa
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32:20 * steve30 can't sleep
45:04 * Halcyon licks Steve on the face
48:12 <steve30> hmm
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10:00 <steve30> i was going to go out today but i didn't anticipate not being able to sleep
23:27 Join: Kuschelpony ([email protected]) to #eevblog
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49:00 <Ysjoelfir> mornings Twitterbots
06:02 <Seng> T3sl4, this should trick the charge controller into believe the voltage is sufficient, right? Or is it going to blow in five mins?
06:07 <Seng> https://hurtig.ninja/19382c7f/IMG_20211021_085557-jpg
06:09 <EEVBot> [Title] - Hurtig Ninja - IMG_20211021_085557.jpg
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13:10 <T3sl4> Seng: what, to charge it up to 9V give or take?
13:43 <Seng> something like that
13:58 <T3sl4> hm, 8.something anyway with that diode in there
14:11 <Seng> 9V measure 9.6V
14:31 <Seng> and the fD of the diode was ~0.6V
14:39 <Seng> So not way off :)
14:43 <T3sl4> it should charge very slowly indeed at the what, 100s mA the 9V can put out at that voltage
15:19 <Seng> and it does charge - slowly. Currently at 8.399V.
15:35 <Seng> Not sure the 9V battery has enough capacity, though.
16:16 <Seng> I think I have 8 more fresh ones in the drawer :)
16:29 <T3sl4> it's about 200mAh or whatever, maybe enough to bring it up to nominal-low level
18:27 <Seng> datasheet is here https://www.procell.com/wp-content/uploads/2019/09/Datasheet_9V_-PC1604_.pdf
19:11 <T3sl4> oh right, a lot more than that. but not very much at that voltage, so yeh
19:11 <Seng> What should I expect to see on the multimeter if the laptop charger kicks in? 12V, right?
19:38 <T3sl4> no... you'll see the voltage rising gradually as it charges in a current limit
20:04 <Seng> ohh, right. The current is constant.
20:35 <Seng> So I would probably have to disconnect the 9V to see if it drops or keeps rising?
23:55 Quit: Kuschelpony ([email protected]) Connection closed
24:07 <T3sl4> well the battery isn't going to do much rising at all, that's not a problem
39:56 <K> hello jar-jars
40:03 <T3sl4> hey binks
40:29 <rust_collector> hey waffle man
43:24 <K> you calling me flat, unhealthy or burnt at the edges, rust_collector ?
43:50 <rust_collector> yes, pretty much
44:04 <K> coincidentally it yesterday it was decided that wes will bes makings waffles this weekend
44:09 <T3sl4> to the contrary, i find your sweet disposition and many intricate crevices alluring
44:12 <T3sl4> ...wait
44:17 <rust_collector> my work is done
44:22 <Seng> You could be a banana and oats waffle, K ?
44:44 <K> no, vanilla waffles here only
44:59 <K> oats is for goats!
45:01 <Seng> Then unhealthy is your own choice (:
45:02 <K> and horses!
45:06 <Seng> I'm a goat.
45:27 <Seng> ..apparently.
45:41 <K> you could be a horse too
46:19 <Seng> I used to have this long goatee, so I'd prefer goat thank you!
46:40 <K> a short hoarsee
47:01 <K> but as you wish
47:07 <K> we do not judge here
47:14 <K> much
47:19 <K> you freak
47:40 <Seng> :)>
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18:55 <watcher> hello
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52:34 * DogWomble_ peers in
06:21 <steve30> hi
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34:28 <hsn> ok, im going to ask even if i look dumber.. how the hell "faraday law" EMF in coil = d(BA)/dT .. like if that coil is connected to 1ohm resistor or 1000 resistor .. it wont change ?
35:30 <hsn> if the coil is connected to 1ohm .. experiencing some flux changing .. it will have more power consumption than one that is connected with high resistance
37:15 <Kuschelpony> no worries, just explain a bit bettwe what you mean and i try to help you
38:02 <hsn> 1- would the moving magnet (towards coil) feel more repeled force when the coil is connected with less ohms ?
39:53 <Kuschelpony> yes!
40:17 <Kuschelpony> you just discovered the eddy current brake
40:50 <hsn> yay congratz to me :D
41:01 Quit: modrobert ([email protected]) Quit: Lost terminal
41:16 <Kuschelpony> think about two actions going into opposite direction
42:20 <hsn> so if you have a moving magnet towards a coil .. with (dflux/dT) = 1T/sec .. led = 1vf .. what would u put as current limiting resistor ?
43:04 <Kuschelpony> hmm? you want to build a shake lamp?
43:29 <Kuschelpony> 1 Tesla per second induces 1 Volt per square meter * number of Turns
45:04 <Kuschelpony> cant remember the other unit of total flux but i also see a different way to calculate
45:09 <hsn> so if u got 3 turns .. u should put resistor of 100ohm
45:19 <Kuschelpony> if you want to peak at 20mA
45:47 <hsn> there is no peak idealy right ? if the df/dt = 1T/sec
46:02 <hsn> like if its constantly increasing.
46:08 <Kuschelpony> what i mean, if you have the unit of how much ampere-turns your magnet equates to, you can also take this one and divide by 20mA to get a current with constant current
46:13 <Kuschelpony> right
46:27 <Kuschelpony> as long as its linearly increasing, you get a constant voltage out
47:33 <hsn> and then if i got another coil of exactly same size .. but instead of connecting the led + resistor .. i shorted its output .. i will rediscover the eddy brake
47:45 <hsn> ok crap .. nice to know :)
47:47 <hsn> thanks
47:56 <Kuschelpony> if its a perfect short this repels like a superconductor, if its a resisitive short its a brake
48:13 <Kuschelpony> there are two extreme cases to calculate induction
48:42 <Kuschelpony> the one is with neglible load, then you have flux*area/time = voltage and the current produces a braking force
48:50 <hsn> so in case i want to brake so hard i have to cool that coil to probably zero kelvin degrees
49:19 <Kuschelpony> the other is with neglible resitance, then you have total flux / number of turns = current, while the voltage breaks down
49:32 <Kuschelpony> hihi, depends on how hard you want to brake
50:32 <Kuschelpony> think about your oputou current as in 20mA you mentioned before, then calculate how many microtesla or nanotesla this creates in your coil, then (i dont have the formula in mind) calculate the repelling force of this filed to the primary fileld
51:30 <hsn> if i care about the repeling force ofc
54:31 <hsn> F = https://www.usna.edu/Users/physics/jamer/_files/lesson26.pdf
23:16 <EEVBot> [Twitter] - eevblog - Wow, this electronics learning system is amazingly comprehensive. https://t.co/ilq4NBBMq5
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15:30 Quit: Tezzers ([email protected]) Ping timeout: 121 seconds
31:02 <hsn> Kuschelpony, thanks man
31:24 <Kuschelpony> oh but that little tecnical explanation is really no issue
32:10 <hsn> me was concern about "different circuits" would have "different power" which make no sense .. until you explained about the eddy brake thingy ..
32:58 <Kuschelpony> hmm, i can not really explain this, but see two chains
33:28 <hsn> ie the external magnet facing opposite force, or (other if its another circuit generating magnatic field) sure it will face some Zo Zin thingy
33:40 <Kuschelpony> yes
34:02 <Kuschelpony> i think the far most misunderstanding is that we have actualy a threeport network
34:35 <hsn> heh ?
34:44 <Kuschelpony> where the ports are the primary coil, the secondary coil and the mechanical work
35:17 <Kuschelpony> so people confuse transformers where the power input is electrical into the primary coil with generators where the power input is into the mechnical resistance
35:37 <hsn> im having 2 ports .. but i interchanging "magnet movement" with "primary coil"
35:54 <hsn> ah
35:57 <Kuschelpony> and wonder why there seems endless power inside magnets, trying to milk them
36:23 <Kuschelpony> so they think up perpeual motion machines
36:25 <Seng> T3sl4, I have the laptop battery pack at 9.7V, but when I disconnect the 9V battery it voltage slowly drops :(
36:39 <Seng> Battery controller most definitely dead!
36:56 <Kuschelpony> no you have three ports always, but in practical cases one of the ports always has a pure reactance
36:57 <T3sl4> well, it'll relax to open circuit voltage over time
37:14 <T3sl4> is it showing a charge in $OS?
37:14 <hsn> hahaha .. at least i know milk comes from cows. ;D
37:24 * Ampera passes T3sl4 some english breakfast in liquid tea form
37:25 <T3sl4> er, still not, rather
37:40 * T3sl4 passes his liquids into Ampera for breakfast
38:15 <T3sl4> (liquids also like tea)
38:19 <Ysjoelfir> uuuh, golden shower!
38:30 * T3sl4 teabags Ysjoelfir
38:38 <Ampera> english/irish tea is so good
38:41 * Ampera yums
38:48 <Seng> it's in the laptop, that's connected to a charger, and I'm measuring on the battery directly. I would assume it should go up.
38:51 <T3sl4> irish i were drunk
38:51 <Kuschelpony> in the case of the generator, the field is from static charegd magnets, in the transformer case the mechanical interation is far far less than one percent power loss into vibrating humming iron
39:16 <T3sl4> Seng: well, replug the battery maybe, make it refresh or something?
39:17 <Seng> #metoo
39:25 * Ampera gives T3sl4 a thick irish brew
39:34 * T3sl4 grows hair on his chest
40:24 <Seng> haha, I have blown that connector like a nintendo game, re-fitting it won't do shit! :)
43:39 <T3sl4> i mean make the OS re-detect the battery
43:48 <T3sl4> sometimes that updates its value
44:27 <Seng> shouldn't the laptop charge despite being turned off?
44:56 <T3sl4> oh you're not even running it, nvm then
45:17 <K> the battery discharges even when laptop is turned off?
45:30 <K> soros be steelin yo charge then
46:24 <Seng> OHH DEAR! My laptop now recognizes that the battery has been discharged!!
46:31 <Seng> OH BOY OH BOY
46:48 <Seng> Previously it just said "100% (8.0V) - all good"
47:23 <rust_collector> party party
47:35 <Seng> not it's actually saying it's charging!!! D:
47:51 <jaymax> 8.0V is 100%? Did laptop manufacturers pivot to LFP chremistry?
48:07 <Seng> ohhh... and now it reports battery voltage going up
48:36 <Seng> jaymax, it says 10.8V on the package and 12V on the circuit board
48:44 <T3sl4> could be the charge gauge got out of sync with the batt controller and thought it was 100% but refused to charge despite the obviously low voltage
49:09 <jaymax> Ah okay, still LiMg
49:13 <T3sl4> cuz who needs to look at some honest state-of-charge signal like voltage when you can emulate it from current flow
49:25 <jaymax> Or Maganese, whatever
49:28 <Seng> I'll never let that battery under 50% every again!
50:04 <T3sl4> things can get wonky from sitting a long time, too, give it a modest cycle every so often
50:40 <T3sl4> will probably take some cycles for it to realize its correct charge state too
51:14 <K> it probs just got affrait Seng will disassemble it
51:18 <Seng> should probably let it die and immediately recharge a couple of times :)
51:18 <K> affraid
51:31 <Seng> K. I did >:)
52:25 <Seng> I basically just charged my laptop with a 9V battery.
52:36 <rust_collector> I have had good luck with starting the thing, enter bios setup, so it does not turn off, and let it run out of power, then recharge, it seems to reset the thingie
53:09 <Seng> rust_collector, I've read that as well on HP's support pages, so that's probably a good approach.
55:06 <rust_collector> I am sure HP found that on reddit or something. what woudl HP know....
55:47 <Seng> I honestly at some point theorized that it didn't charge because the battery is not a HP brand one.
56:24 Quit: steve30 ([email protected]) Quit: <Baljem> steve30: by the way, I had the most bizarre dream the other day that someone came in here and seriously flipped their shit over your quit message and why aren't the ops /doing/ something about it
56:29 <Seng> Thanks for the moral support, T3sl4 <3
56:40 <T3sl4> mmm, morels
57:47 <Seng> English is not my main language. I have no idea what morels are, but I'm sure it's some kind of bodily fluid when you say it like that.
58:57 <rust_collector> it is the slime eels make, when you have them in your hovercraft
59:17 <rust_collector> (I think)
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