Electronics Design

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Here's An Idea: Let's Make Rabies As Infectious As Corona

Pulling out the big guns to defeat the virus. https://www.jefferson.edu/about/news-and-events/2020/5/bharat-jefferson-pu...
0 comments posted 6yrs
posted by bloggs.fredbloggs.fred
0 comments posted 6yrs posted by bloggs.fredbloggs.fred

Graphics card fans

Why do graphics cards only monitor the speed of one fan? If the other one fails, it won't know!
23 comments posted 6yrs
posted by CFKinsey
23 comments posted 6yrs posted by CFKinsey

Conical inductors--still $10!

So I was chatting with my local Mini Circuits rep, who also handles Gowanda. He asked if I was interested in conical in...
21 comments posted 6yrs
posted by pcdhSpamMeSenseless
21 comments posted 6yrs posted by pcdhSpamMeSenseless

OPC and OPC UA

Until today I'd never heard of such, but... AWS accepts data from various sensors speaking the above for observation/mo...
5 comments posted 6yrs
posted by wb8foz
5 comments posted 6yrs posted by wb8foz

Unknown Part on Schematic

Digital part, in block labeled "UART Function". Seems to be a UART with SI N, SOUT and 8 data, 3 address and the typica...
5 comments posted 6yrs
posted by gnuarm.deletethisbit
5 comments posted 6yrs posted by gnuarm.deletethisbit

fake Edison lamps

The LED Edison lamps are cool. They seem to have a bridge rectifier and a current limiter chip in the base. Does anyone...
17 comments posted 6yrs
posted by jlarkin
17 comments posted 6yrs posted by jlarkin

JT's secret sauce

Hi, All, IIRC somebody here managed to snag a copy of JT's SecretSauce.html page when it actually had something on it....
6 comments posted 6yrs
posted by pcdhSpamMeSenseless
6 comments posted 6yrs posted by pcdhSpamMeSenseless

Well, so much for the old maxim

"Never buy Maxim." https://www.bloomberg.com/news/articles/2020-07-13/analog-devices-is-said-near-deal-to-buy-maxim-for-...
14 comments posted 6yrs
posted by jmiles
14 comments posted 6yrs posted by jmiles

Counterfeit DS18B20s

You think regular Maxim is bad, wait until you see the clones: "We bought over 1000 "waterproof" probes or bare chips f...
0 comments posted 6yrs
posted by user
0 comments posted 6yrs posted by user

Why do CPUs use less electricity than GPUs?

Why are CPUs only about 80W TDP? Can't they make ones with three times as many cores that have 250W TDP like graphics ca...
32 comments posted 6yrs
posted by CFKinsey
32 comments posted 6yrs posted by CFKinsey

Equivalent capacitance for LC low pass filter

Could some electronics guru here provide some hints/ suggestions on this problem ? I would like to determine the equiva...
8 comments posted 6yrs
posted by dakupoto
8 comments posted 6yrs posted by dakupoto

Any Arduino nerds?

I'm having an Arduino problem that's so strange that I'm at a loss to understand it. I posted on the Arduino Forum, but...
38 comments posted 6yrs
posted by waybackNO584SPAM44
38 comments posted 6yrs posted by waybackNO584SPAM44

LED Puzzle answer

SAI_Peregrinus on July 5, 2018 [?] The bit inside the 9 volt connector isn't really logic. The flip-flops and Schmitt t...
4 comments posted 6yrs
posted by somewhere
4 comments posted 6yrs posted by somewhere

12V to 5V conversion

My nephew is mucking about with home automation stuff and has wiring in his place for an alarm system. The original pan...
17 comments posted 6yrs
posted by gnuarm.deletethisbit
17 comments posted 6yrs posted by gnuarm.deletethisbit