// #eevblog — 2026-07-16
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00:24:54 Join: Kuschelpony ([email protected]) to #EEVblog
01:29:08 <Kuschelpony> im wondering if there is something like an schottky thyristor (or at least possible by semiconductor physics), where schottkyjunctions shunt the active thyristor junctions (that appear as CB-Diodes of the equivalent circuit), so there is not saturation happening and therefore very fast recovery times
01:30:40 Quit: pa1983 ([email protected]) Connection closed
01:39:53 Join: pa1983 ([email protected]) to #EEVblog
02:07:11 <DHess_US> Draw out the transistor level schematic of an SCR and add Schottky diode baker clamps.
02:35:52 <Kuschelpony> thats my idea
03:23:01 <DHess_US> Ok, but you can make and test it.
03:23:34 <DHess_US> Two transistors make a fine SCR, and sometimes that is done to get better performance including higher speed.
03:23:55 <DHess_US> So make one and test it with and without the Schottky diodes.
06:25:30 Quit: Kuschelpony ([email protected]) Connection closed
09:06:52 <flyback> neat you can make a "scr" out of transistors?
09:07:00 <flyback> does that work for crowbar circuits
10:46:41 <Halcyon> Mornings
11:37:26 <electrohead> !coffee Halcyon
11:37:26 * EEVBot pours coffee down Halcyon's throat
12:01:52 Join: Nothing\ ([email protected]) to #EEVblog
12:02:08 <Nothing\> omg, so much smoke in the air here from forest fires
12:02:36 <Nothing\> it's weird, they're literally hundreds of miles away but i can still smell and even see the smoke
12:02:50 <Nothing\> the sky's been a weird orange color all day
12:03:03 <Nothing\> and about as dark as if there were going to be a thunderstorm
12:03:47 <Nothing\> and it stinks so bad. Not like camp fire smoke. Just really acrid and sharp. I would expect a forest fire to make woody smelling smoke.
12:04:29 <Nothing\> i looked at a map and there are fires peppering almost all of Ontario down to the Southern Peninsula where I am
12:05:48 <Nothing\> i have an air quality meter, so I set it up outside and the particulate matter was about 30x what I normally see inside my house
12:06:17 * steve30 meows at Halcyon
12:06:30 * Nothing\ moos at steve30
12:06:36 <Nothing\> LOL
12:06:41 <Nothing\> steve30, my cat just started meowing
12:06:49 <Nothing\> at me
12:07:16 <Nothing\> she wants attention
12:08:08 * steve30 paws at Nothing\
12:29:05 <Nothing\> https://www.youtube.com/watch?v=0Y-9GbsS9Fg
12:29:05 <EEVBot> [YouTube] mechanical light bulb from 1675 | 29m 58s | Channel: styro pyro 2 | 504,514 views | 2026-07-14 - 18:35:54 UTC
12:29:18 <Nothing\> can't go wrong with styro pyro
12:30:58 <Nothing\> i still can't get enough of his video he made of drawing around 10 megawatts from a bank of car batteries
12:31:36 <Nothing\> ~62volts * 180kiloamps
12:58:45 <DHess_US> <flyback> neat you can make a "scr" out of transistors?
12:58:45 <DHess_US> <flyback> does that work for crowbar circuits
12:58:48 <DHess_US> Yes, and yes.
13:56:50 * steve30 is playing with AI
14:23:00 <Nothing\> DHess_US, i've never heard of it being done with actual discrete transistors, but I know it's possible and a definite "trap for new players" for IC designs to accidentally produce an arrangement of silicon that creates a circuit that behaves like an SCR and ends up getting permanently latched open
14:49:21 <steve30> Clause is being very helpful at helping me interpret legislation :)
14:52:15 <steve30> *claude even
16:42:00 <DHess_US> Nothing\, I have seen it a couple times in real circuits to make low power latches. Two transistors are cheaper than the least expensive SCR.
16:42:21 <DHess_US> Plus with two transistors, you have access to the other control lead if you want it.
16:42:29 <DHess_US> So you can make a "reverse" SCR.
17:15:44 <Nothing\> hrm
17:15:59 <Nothing\> should I spend $150+ on a TI-84 Pro?
17:16:14 <Nothing\> I feel like that's a LOT of money for what it is
17:16:52 <Nothing\> i mean, if i were a student or something I could see it being allowed in SATs and exams being a huge advantage, but I think they even let you use phones in some open book exams now.
17:17:52 <Nothing\> apparently they have python now instead of BASIC, huh
17:18:17 <Nothing\> I've also heard really good things about the HP Pro line, but I don't know the first thing about it
17:18:40 <Nothing\> I used to have an HP Pro emulator of some sort on my phone but they apparently stopped making it
17:19:12 <Nothing\> I imagine they'd be just as capable as a TI calculator, but without the premium you pay for the brand
17:22:10 <Nothing\> I have a fairly basic TI-36x Pro, but it doesn't do graphing. Most it'll do is you put in a function with one argument and it gives you a list of values depending on what X is
17:22:49 <Nothing\> or basic diff/integral calc, but only if you give it a specific value for X
17:24:06 <Nothing\> plus it's really slow, it actually had to spend over a minute today processing a summation problem i gave it. Which was just to sum the first 1,000 reciprocals. Trying to sus out the limit since that's not a feature, either.
17:24:43 <Nothing\> it can't take THAT many operations to sum 1,000 reciprocals
17:25:51 <Nothing\> weird, these calculators vary wildly in price depending on the color. There's absolutely nothing else different about them.
17:26:54 <Nothing\> regular black ones are $165, but the salmon pink ones are friggin $390. Are you kidding? You could buy a cell phone and put mathematica on it and have more functionality.
17:27:31 <Nothing\> WTF this has to be wrong. They have a black and orange one for $2,500
17:27:44 <Nothing\> who would pay $2,500 for a TI-84?
18:53:31 Quit: Nothing\ ([email protected]) Quit: Leaving
20:42:37 Quit: spyda ([email protected]) Ping timeout: 2 minutes
21:49:08 <MrMobodies> I think there countries don't like tourists
21:49:16 <MrMobodies> https://7news.com.au/news/devastating-news-for-families-of-aussie-teens-bianca-jones-and-holly-bowles-who-died-from-methanol-poisoning-in-laos-c-22589274
21:49:16 <EEVBot> [url] Devastating news for families of Aussie teens Bianca Jones and Holly Bowles who died from methanol poisoning in Laos | 7NEWS | 7news.com.au
21:50:01 <MrMobodies> I wonder, why do the tourists get poisoned but I don't hear it happening to the locals.
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