// #eevblog — 2019-06-11
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01:15:06 Quit: hsn993 ([email protected]) Ping timeout: 121 seconds
02:47:37 <DHess_US> AC simultion is small signal analysis which requires a DC operating point and assumes that the operating point does not change. Transient simultion is AC large signal response.
03:20:22 Join: Bluenote ([email protected]) to #EEVblog
03:41:54 <desu> yes
03:42:05 <desu> now another question if that's ok
03:42:15 <desu> what causes the am sidebands to appear?
03:42:19 <desu> like
03:42:31 <desu> what is the "mechanism" called
03:44:01 <Ampera> hullo
03:45:20 <desu> hi
03:45:48 <desu> the math part i am not confused about, its more *how* does amplitude shift cause other frequencies to appear
03:45:50 <rust_collector> time for todays weird music
03:46:26 <Ampera> rust_collector, what music
03:46:38 <rust_collector> not sure yet...
03:47:44 <Ampera> you need weird music?
03:47:47 <Ampera> I got weird music
03:48:24 <Ampera> https://www.youtube.com/watch?v=c8VQcIkI7Qs
03:48:33 <Ampera> One of my favourite songs that cound be considered weird
03:50:34 <desu> sounds like the beatles
03:50:42 <desu> kinda
03:51:07 <rust_collector> elo is good
03:51:24 <rust_collector> I think I will do this one today: https://www.youtube.com/watch?v=aCFEETZX3SY
03:52:34 <Ampera> desu, that's very correct
03:52:44 <Ampera> ELO was formed to "continue where the beatles left off"
03:53:01 <Ampera> which in my mind is an incredibly corny thing to say, but John Lennon ratified that by saying that they were the sons of the beatles
04:18:22 <Ampera> Helicopter into building crash in Manhattan, near Central Park
04:18:29 <Ampera> 1 Fatality, situation ongoing
04:19:46 <rust_collector> hydrogen filling station blew up over here. knocked down a fence, and people said it was really loud.
04:23:45 <Ampera> Reported as an accident, fire under control
04:24:25 Quit: Bluenote ([email protected]) EOF from client
04:26:54 <steve30> looks like rain all day tomorrow :(
05:06:37 Join: randoh ([email protected]) to #EEVblog
05:07:04 <randoh> Anyone here who can turn a complex impedance formula to a circuit so I can verify my understanding for an exam exercise?
05:17:50 Quit: Halcyon ([email protected]) Ping timeout: 121 seconds
05:21:30 Join: Halcyon ([email protected]) to #EEVblog
05:44:56 <coppice_> steve30: there was a lot of rain today
05:45:38 <randoh> Okay, I got the schematic verified by an example
05:45:50 <coppice_> desu: you can't modulate in any way without creating some bandwidth
05:45:56 <randoh> but jeez, now I have to do complex algebra on this piece of ugh
05:46:11 <desu> i understand that
05:46:16 <desu> but how
05:46:23 <desu> and why
05:46:26 <desu> does it occur
05:47:07 <coppice_> if you have a single pure tone, all you have is a sine wave. anything other than a pure sine wave has bandwidth
05:47:33 <desu> i suppose so
06:26:28 <DHess_US> https://i.imgur.com/VZmSngo.jpg
06:27:09 Quit: randoh ([email protected]) Connection closed
06:27:43 <rust_collector> kinky
06:28:14 <DHess_US> The safe word is "halogens", and you have to spell it, and list them.
06:30:52 <DHess_US> https://pbs.twimg.com/media/D8flIzaWsAIxtWB.png
06:32:10 <DHess_US> https://i.imgur.com/QI2S6hy.jpg
06:33:03 <rust_collector> perfect
06:33:13 <DHess_US> Oh, please ... https://twitter.com/justinbieber/status/1137880621848584193
06:35:59 <coppice_> Hookup wire? If you're using wire, that's not a hookup. Its bondage.
06:36:48 <DHess_US> https://i.redd.it/3oy3fyznqi331.jpg
06:42:21 <coppice_> Ampera: ELO was formed to continue where The Move left off
07:13:10 <DHess_US> https://img.pr0gramm.com/2019/06/10/32ae39a19085f072.png
07:39:29 Join: Bluenote ([email protected]) to #EEVblog
08:23:43 Join: steve31 ([email protected]) to #EEVblog
08:35:02 Quit: steve31 ([email protected]) Quit: This user has performed an illegal operation and will be shut down.
08:59:53 Join: ThunderSqueak ([email protected]) to #EEVblog
08:59:53 Mode: (by ChanOP) +o ThunderSqueak
09:48:01 <DHess_US> "Gluten Free Antarctica ..." Wait, what?
10:59:36 <coppice_> they're going to eliminate all the wheat fields of Antarctica?
11:08:14 <DHess_US> Toothpaste makes a fine transfer media for metal working. Show me where it says I can't!
11:11:22 * Ampera shows DHess_US
11:13:10 <DHess_US> Oh, nevermind.
11:13:40 <DHess_US> Readily availble, cheap, easy to clean up, what I had available.
11:13:40 <Ampera> Tower to Halcyon
11:13:45 <Ampera> Tower to Halcyon
11:32:19 <EEVBlog> New EEVBlog Tweet: WTF This idea just completely fails the instant you make your measurement and put the probes down on the bench. Then what? Are you supposed to do your other stuff with the leads hanging off your arm? Or plug in-out for every measurement? AND you have to recharge it! Just NO. https://t.co/MnkDk5Kc87
11:33:11 <steve30> a wearable multimeter eh?
11:33:16 <steve30> lets hope it doesn't blow up :)
11:39:27 <EEVBlog> New EEVBlog Tweet: Just buy a pocket meter and put it next to or under the point you are probing will get you a way closer display than this silly thing on your wrist.
12:10:41 Quit: ThunderSqueak ([email protected]) Quit: Leaving
12:42:46 Quit: Bluenote ([email protected]) EOF from client
14:00:04 Join: hsn993 ([email protected]) to #EEVblog
14:15:58 <EEVBlog> New EEVBlog Tweet: It gets better! An add-on finger display! I'm waiting the stretch goal of adding an accelerometer to get a StrokeCounter™ https://t.co/ncdf2gfU4P
14:33:36 Quit: hsn993 ([email protected]) Ping timeout: 121 seconds
14:56:16 <DHess_US> https://gigatron.io/
15:43:02 Join: hsn993 ([email protected]) to #EEVblog
16:22:36 Join: ThunderSqueak ([email protected]) to #EEVblog
16:22:36 Mode: (by ChanOP) +o ThunderSqueak
17:37:58 Join: Bluenote ([email protected]) to #EEVblog
17:40:51 <EEVBlog> New EEVBlog Tweet: Need a multimeter watch? Add a strap to this. And it's SOLAR FREAK'N POWERED! https://t.co/DyiqD0tf9q
18:19:49 * Halcyon mews loudly at T3sl4's door
18:26:13 * Halcyon moves on to steve30's window
18:28:48 <K> hello
18:39:58 Quit: ThunderSqueak ([email protected]) Quit: Leaving
19:06:27 <DogWomble> ooh look a meowing kitty
19:50:41 * steve30 fires raindrops at Halcyon
20:22:04 <Halcyon> Hey Steve "_
20:22:05 <Halcyon> :)
20:22:15 <Halcyon> DogWomble: Cats are stupid
20:22:33 <DogWomble> i used to own a cat :)
20:23:04 <Halcyon> What glorious words
20:23:07 <Halcyon> "Used to"
20:23:26 <DogWomble> well she died of kidney failure
20:23:43 Quit: Bluenote ([email protected]) Quit: Leaving
20:23:51 <Halcyon> That's sad, I actually like animals
20:23:56 <Halcyon> Even stupid animals
20:24:10 <Halcyon> Which is why I'm watching this: https://www.youtube.com/watch?v=Eidv1o69OZU
20:24:20 <DogWomble> yeah, well i'd had her 10 years when it happened, she was an adult when i got her so she lived a decent life
20:24:35 <K> carefull or you'll end up like squirel/chipmunk guy here
20:25:12 <steve30> I've been out in the rain
20:25:12 <DogWomble> well for me, the cat made more sense ... i wouldn't mind a dog, but given i live in a small one bedroom place i don't really have the space for one
20:26:31 <steve30> I didn't fancy going on the bike in the pouring rain, so I cheated and went on the bus
20:28:54 <desu> birds are the best pets
20:29:14 <DogWomble> i wouldn't mind getting a bird :)
20:29:31 <DogWomble> i'm just not sure how i feel about keeping it locked up in a cage
20:30:16 <desu> yeah that's a bit sad
20:30:54 <Halcyon> There is an Aussie guy on Youtube who teaches his birds to free-fly. So he lets them out, but they come right back
20:31:01 <Halcyon> He's also super camp, but that's another thing
20:31:38 <steve30> I have a suspicion that halcyon likes camp guys
20:32:25 <desu> falconeering
20:32:28 <desu> i think its called
20:32:31 <desu> or something
20:32:42 <desu> you can train them to hunt and stuff
20:33:03 <Halcyon> https://www.youtube.com/watch?v=yjQ6ho1rDKQ
20:33:05 <desu> falconry
20:33:13 <Halcyon> This is one of his videos, you see him at around 5:35
20:33:29 <Halcyon> It seems to be quite common here
20:34:45 <desu> that's a big bird
20:34:50 <desu> at 5:40
20:35:00 <Halcyon> Yeh gorgeous
20:35:13 <Halcyon> I love Australian birds, they are so cute
20:35:20 <Halcyon> Cockatoos can be assholes though
20:36:02 * steve30 sits next to Halcyon and meows
20:36:18 * Halcyon scratches Steve
20:38:17 <steve30> :)
20:39:03 <desu> magpies & crows are the best bird
20:39:08 <desu> wish it was legal to have one at home
20:39:29 <desu> but it's apperently really illegal which is odd
20:39:31 <DogWomble> the problem with magpies is when it's breeding season, they're swoopie little bastards
20:39:33 <desu> when you can shoot them at will here
20:39:47 <desu> well not magpies but crows
20:42:10 <Halcyon> DogWomble, if you feed them, they learn your face
20:42:22 <Halcyon> I have magpies visit me, you can feed them by hand
20:43:02 <DogWomble> yeah, the problem i have is on some of the bike routes i ride, they tend to get quite agressive with the helmet :()
20:43:33 <desu> weird
20:43:40 <Halcyon> :P
21:29:10 <steve30> Mum's parcel has arrived. I guess I can go to bed now :).
21:29:19 <steve30> Well, when I've done watching big clive
21:42:36 Quit: hsn993 ([email protected]) Ping timeout: 121 seconds
22:26:38 Join: hsn993 ([email protected]) to #EEVblog
23:48:47 <DHess_US> Tested a dimmable Cree LED lamp on a variac and it worked.
23:50:03 <T3sl4> but do they still dim when power dips?
23:51:03 <T3sl4> (kind of a joke on the pray-tell-mr-babbage anecdote, but plausible to a certain extent)
23:56:23 <DHess_US> Yea, I didn't expect it to work because some dimmable LED lamps detect the phase-control directly instead of the average input voltage.
23:56:48 <DHess_US> But it worked fine with the Cree lamps I have.
23:57:02 <DHess_US> It dimmed down to maybe 10%, quite a bit.
23:57:08 <K> doesn't it stress the power supply though?
23:57:13 <DHess_US> What power supply?
23:57:26 <K> led lamp
23:57:57 <T3sl4> 10% visually, at that?
23:58:07 <DHess_US> yes, 10% visually. Maybe 5%
23:58:45 <DHess_US> K, I dont' think so. The lamp didn't function below say 40% where the power was much lower.
23:59:34 <T3sl4> that's quite good then, that's like 1% electrically
23:59:45 <DHess_US> I can check it. min.
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