How to become a billionaire ! =D

Started by skybuck2000 in sci.electronics.design3 weeks ago 16 replies

All you need to do according to my half-brother is invent a way to store power. Basically next generation batteries ! Good luck !...

All you need to do according to my half-brother is invent a way to store power. Basically next generation batteries ! Good luck ! =D Bye, Skybuck =D


Corona Update 20, The Nazi Conspiracy

Started by skybuck2000 in sci.electronics.design3 weeks ago 36 replies

The Nazi Conspiracy is repeating itself: 1. Spread around a virus like in 1918. 2. Collapse the economy, through bottlenecks in supply chain...

The Nazi Conspiracy is repeating itself: 1. Spread around a virus like in 1918. 2. Collapse the economy, through bottlenecks in supply chain and inflation/hyper inflation. 3. Blame it on the existing goverments, incapable of fighting the virus, incapable of stopping the inflation. New step introduced: 4. Spend 40 years injecting puppets/pawns into goverments/company. 5. Take over the compa...


OT: French (?) burial customs

Started by Don Y in sci.electronics.design3 weeks ago 7 replies

In the US, bodies interred in earth are typically marked with a headstone (of differing degrees of detail). In France, it appears (?) that the...

In the US, bodies interred in earth are typically marked with a headstone (of differing degrees of detail). In France, it appears (?) that the headstone is part of a more elaborate crypt-like structure. I.e., almost as if it was a "headboard" of a *bed* (with the "matress" being implemented as a large, horizontal slab of stone). Is this common? Does the "slab" act as a cover for the bu...


transformer coupled logic isolator

Started by Anonymous in sci.electronics.design3 weeks ago 61 replies

Version 4 SHEET 1 880 680 WIRE 480 -32 384 -32 WIRE 608 -32 560 -32 WIRE 608 80 608 -32 WIRE 608 80 544 80 WIRE 656 80 608 80 WIRE 688 80...

Version 4 SHEET 1 880 680 WIRE 480 -32 384 -32 WIRE 608 -32 560 -32 WIRE 608 80 608 -32 WIRE 608 80 544 80 WIRE 656 80 608 80 WIRE 688 80 656 80 WIRE -112 96 -160 96 WIRE -64 96 -112 96 WIRE 48 96 16 96 WIRE 80 96 48 96 WIRE 240 96 192 96 WIRE 272 96 240 96 WIRE 384 96 384 -32 WIRE 384 96 336 96 WIRE 432 96 384 96 WIRE 480 96 432 96 WIRE -160 144 -160 96 WIRE 80 144 80 96 WIRE ...


FM radio design resources

Started by Harry Dudley-Bestow in sci.electronics.design3 weeks ago 85 replies

Looking to build a sensible FM radio transmit/receive pair, designed for short range (10s of meters) and excellent audio quality. Making for...

Looking to build a sensible FM radio transmit/receive pair, designed for short range (10s of meters) and excellent audio quality. Making for personal use, so very flexible on operating frequency, BOM cost etc. Had a look in my go-to Art of Electronics (not enough detail) and tried to find an app note or something on the subject, no dice. Designs on the internet have no explanatio


cool war book

Started by Anonymous in sci.electronics.design3 weeks ago 43 replies

The Battle of the River Plate by Dudley Pope. -- I yam what I yam - Popeye

The Battle of the River Plate by Dudley Pope. -- I yam what I yam - Popeye


Simple audio amp design

Started by Cursitor Doom in sci.electronics.design3 weeks ago 93 replies

Greetings, gentlemen, I have a vintage MW/LW/SW 12V battery-powered radio I picked up recently at a yard sale. Being 50 years old, however,...

Greetings, gentlemen, I have a vintage MW/LW/SW 12V battery-powered radio I picked up recently at a yard sale. Being 50 years old, however, it has a few faults and needs realignment and whatnot. Before I can proceed with that, I've discovered that the transistors it uses (mostly obsolete germanium devices) suffer from tin whiskers so I will need to re-jig the board so they can be repl...


ADCMP582 LT Spice Model

Started by Anonymous in sci.electronics.design3 weeks ago 1 reply

ADI doesn't have models yet for their fast comparators. Or any of their own comparators. Here's my first cut at a model for the ADCMP582, a...

ADI doesn't have models yet for their fast comparators. Or any of their own comparators. Here's my first cut at a model for the ADCMP582, a superfast comparator with RSPECL outputs and programmable hysteresis. I didn't do output rise/fall times yet; one cap on node M might sorta work. Nice, expensive, hard to solder, power-hogging part. Version 4 SHEET 1 936 680 WIRE 80 -96 48 -96 ...


Self-check kiosks

Started by Don Y in sci.electronics.design3 weeks ago 6 replies

I made a few purchases at the grocery, yesterday. Their self-check design requires the scanned item to be placed in the bagging area before the...

I made a few purchases at the grocery, yesterday. Their self-check design requires the scanned item to be placed in the bagging area before the next item can be scanned (as some dweeb thinks that's how best to "monitor" the checkout process) The bagging area is a weighing platform, of course. So, it can "see" when you've placed something ELSE there. (It can also see when you have *remove...


Apex

Started by John Larkin in sci.electronics.design3 weeks ago 24 replies

Does anyone use Apex parts? https://www.mouser.com/c/semiconductors/amplifier-ics/operational-amplifiers-op-amps/?marcom=184 808364 The...

Does anyone use Apex parts? https://www.mouser.com/c/semiconductors/amplifier-ics/operational-amplifiers-op-amps/?marcom=184 808364 The companion heat sink is https://www.mouser.com/ProductDetail/Apex-Microtechnology/HS11?qs=TiOZkKH1s2RwK46pUwsmlQ%3D%3D -- If a man will begin with certainties, he shall end with doubts, but if he will be content to begin with doubts he shall end


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