Electronics Design

Re: This is Not America

> 28% of "Democrats" are fine about murdering a political opponent if it > furthers their "progressive" cause. Just thi...

13 comments posted 1yr

posted by fizzbintuesday

13 comments posted 1yr posted by fizzbintuesday

OT major medical advance

I just went over to the giant Kaiser hospital, to see my GP for a checkup. She entered with a frilly top and a very col...

2 comments posted 1yr

posted by jl

2 comments posted 1yr posted by jl

quad 1/2 bridge

https://www.digikey.com/en/products/detail/texas-instruments/DRV8962DDWR/18724317 Four half-bridge switchers for about...

4 comments posted 1yr

posted by JL

4 comments posted 1yr posted by JL

Re: Join the NASA design challenge: win 15,000 dollars

> Find Me on the Moon: NASA Lunar Navigation Challenge: >...

8 comments posted 1yr

posted by somebody

8 comments posted 1yr posted by somebody

"Double Pulse Generator"

Gentlemen, Looking back through my stash of vintage test gear, I've uncovered something which describes itself as a dou...

4 comments posted 1yr

posted by cd

4 comments posted 1yr posted by cd

Re: OT: CERN cuts ties with Russia , will expel hundreds of scientists by December

> CERN cuts ties with Russia, will expel hundreds of scientists by December: > https://arstechnica.com/science/2024/09/...

12 comments posted 1yr

posted by bill.sloman

12 comments posted 1yr posted by bill.sloman

Re: Magnetic force

> I have an optically-couple "supervisory port" on my > devices. A design requirement is that the outer surfaces > of t...

6 comments posted 1yr

posted by liz

6 comments posted 1yr posted by liz

Upper limit of timing resistor value in a tropical setting

Take a typical domestic environment in a tropical region, rather humid at times. Assembled board is not conformal coate...

8 comments posted 1yr

posted by Pimpom

8 comments posted 1yr posted by Pimpom

Re: OT: This is Not America

Am 19.09.24 um 23:17 schrieb Cursitor Doom: > 28% of "Democrats" are fine about murdering a political opponent if it >...

2 comments posted 1yr

posted by dk4xp

2 comments posted 1yr posted by dk4xp

136 relays

Can't wait to see this one built. It's an 8-layer board with 2 oz copper on all the inner layers....

2 comments posted 1yr

posted by jl

2 comments posted 1yr posted by jl

Re: OT: Chinese tokamak

On Thu, 19 Sep 2024 09:49:30 GMT, Jan Panteltje snipped-for-privacy@comet.invalid wrote: >The US led on nuclear fusion...

10 comments posted 1yr

posted by JL

10 comments posted 1yr posted by JL

faster DDS clock

Assume a DAC being driven with an n-bit sine waveform at some clock frequency, and then a lowpass filter and a comparat...

23 comments posted 1yr

posted by jl

23 comments posted 1yr posted by jl

DDS filters

I can use an Efinix FPGA and a bunch of cheap fast DACs to make some DDS clock sources, specifically four. The pain is...

7 comments posted 1yr

posted by jl

7 comments posted 1yr posted by jl

Exploding pagers

Pagers, even with a cheap LiPo battery that fails, do not explode. Somebody built hundreds, maybe thousands, of intenti...

132 comments posted 1yr

posted by uucp

132 comments posted 1yr posted by uucp

RP2040 reset idea

The RP2040 has a cool mode where it can be made to boot up with the USB port looking like a memory stick. That's great...

36 comments posted 1yr

posted by JL

36 comments posted 1yr posted by JL