Electronics Design

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....And Another One Bites the Dust!

I find that about 20% of the stuff I try to repair I just make worse and end up throwing it in the garbage. The reason...
2 comments posted 1yr
posted by cd
2 comments posted 1yr posted by cd

Re: SAS expander

> AFAICT, a SAS expander should also support SATA drives. Can anyone > confirm that -- or, is it an "implementation def...
2 comments posted 1yr
posted by gtaylor
2 comments posted 1yr posted by gtaylor

Grounded grid VHF front-end

My current receiving aerial system is very inefficient at 2 metres (144 Mc/s) and I have thought about making a sleeve...
48 comments posted 1yr
posted by liz
48 comments posted 1yr posted by liz

switchmode gyrator

Inductors are awful. Their energy storage is worse than electrolytic caps by about a factor of 1000....
19 comments posted 1yr
posted by JL
19 comments posted 1yr posted by JL

Final final 1kHz oscillator

This is the simplest circuit I can come up with. Harmonics are more than 80dB down in simulation. FFT the last 30 secon...
58 comments posted 1yr
posted by invalid
58 comments posted 1yr posted by invalid

Re: Validation in non-regulated industries/markets

> In *regulated* industries (FDA, aviation, etc.), products are > validate (hardware and software) in their "as sold" c...
3 comments posted 1yr
posted by david.brown
3 comments posted 1yr posted by david.brown

Re: Domestic sources

On Thu, 7 Nov 2024 17:09:02 -0700, Don Y snipped-for-privacy@foo.invalid wrote: >An old client dropped me a line (I hav...
1 comments posted 1yr
posted by jl
1 comments posted 1yr posted by jl

clamper

I want a small cheap voltage clamper device. I'd like under 2 volts drop at 1 mA, but minimal current at a few hundred...
8 comments posted 1yr
posted by jl
8 comments posted 1yr posted by jl

OT: Don't let Peanut Die For Nothing

This is just typical of Democrat control. Today a defenseless squirrel; tomorrow you or me. That's how these heartless...
99 comments posted 1yr
posted by cd
99 comments posted 1yr posted by cd

Re: 2024 engineers's holiday gift guide

On Mon, 04 Nov 2024 14:53:28 GMT, Jan Panteltje snipped-for-privacy@comet.invalid wrote: >2024 Engineer's Holiday Gift...
1 comments posted 1yr
posted by JL
1 comments posted 1yr posted by JL

Re: A laser based landmine detector

> A laser based landmine detector > https://www.sciencedaily.com/releases/2024/11/241101124009.htm> Research uses laser...
0 comments posted 1yr
posted by bill.sloman
0 comments posted 1yr posted by bill.sloman

New improved version

Looks much cleaner at 1KHz now, and everything else is >80dB down. Version 4 SHEET 1 2196 932 WIRE 400 -704 368 -704 WI...
0 comments posted 1yr
posted by invalid
0 comments posted 1yr posted by invalid

80dB now but still needs improvement at 1KHz

Simulation isn't fast but if you let it complete and do an FFT on the last 30 seconds, it's 80dB down at all unwanted h...
45 comments posted 1yr
posted by invalid
45 comments posted 1yr posted by invalid