Electronics Design

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Worth reading in Electronics Design

Soft start for power supply

For Cursitor Doom A typical slow start circuit for tube equipment prevents or minimizes surges. It allows the tubes to...
8 comments posted 11mos
posted by ehsjr
8 comments posted 11mos posted by ehsjr

Henry Colpitts, cool guy

https://blog.minicircuits.com/outstanding-oip2-from-a-small-dual-mmic-amplifier/?_hsmi=384271201 John Larkin Highland Te...
1 comments posted 11mos
posted by jl
1 comments posted 11mos posted by jl

PSU Voltage Surges

Gentlemen, I've a couple of vintage HT power supplies which date from around 50 years ago; valve jobs. Anyway, the valv...
50 comments posted 11mos
posted by cd
50 comments posted 11mos posted by cd

Re: ping liz@poppyrecords

In article I was just reading in comp.os.linux.advocacy about this: > https://gwc.sourceforge.net/>did you know about t...
4 comments posted 11mos
posted by dplatt
4 comments posted 11mos posted by dplatt

Gone awfully quiet!

I can't help noticing since I drew everyone's attention to Grok that it's gone awfully quiet around here. I did postula...
69 comments posted 11mos
posted by cd
69 comments posted 11mos posted by cd

Re: Too funny

> Sadly, by the time I found a phone, powered it on, waited for it to boot > and then tried to point-and-shoot (while d...
0 comments posted 11mos
posted by invalid
0 comments posted 11mos posted by invalid

Re: OT: Too funny

> Sadly, by the time I found a phone, powered it on, waited for it to boot > and then tried to point-and-shoot (while d...
1 comments posted 11mos
posted by jrr
1 comments posted 11mos posted by jrr

+24 to -24 converter

It worked, first time. That's the forced-PWM spread-spectrum version of that LMR38020 high-voltage switcher chip. It se...
25 comments posted 11mos
posted by jl
25 comments posted 11mos posted by jl

temperature test chamber

The 5 liter beer cooler/heater was $35 and the USB fan was $10. It goes from 12c to 57c. Maybe some people like hot bee...
0 comments posted 11mos
posted by jl
0 comments posted 11mos posted by jl

Pulse shrinker

Gentlemen, I need to shrink the duration of 'on' pulses in a continuous DC pulse train. At present, they're 4.5V and 30...
3 comments posted 11mos
posted by cd
3 comments posted 11mos posted by cd

UK battery suppiles

Does anyone know what is going on in th UK e domestic supply chain for'primary' dry batteries? The budget supermarket o...
59 comments posted 11mos
posted by liz
59 comments posted 11mos posted by liz

CS/CE jobs

https://www.breitbart.com/politics/2025/09/29/uc-berkeley-computer-science-prof-fresh-grads-struggle-to-get-jobs-due-to...
9 comments posted 11mos
posted by jl
9 comments posted 11mos posted by jl

environmental test chamber

https://www.amazon.com/dp/B0DH1WG264?ref=ppx_yo2ov_dt_b_fed_asin_title This cools to 12c and heats to 47. It heats fast...
0 comments posted 11mos
posted by jl
0 comments posted 11mos posted by jl