Electronics Design

fun with AI

We designed a replacement for an old high-voltage pulse amplfier, an EG&G SG-489 ca 1990. I wrote the new manual and in...

9 comments posted 1yr

posted by jl

9 comments posted 1yr posted by jl

Climate Remediation Engineering - World Politics

And then there is the World political issue: China's position has always been that the present CO2 levels are what it t...

2 comments posted 1yr

posted by joegwinn

2 comments posted 1yr posted by joegwinn

DDS question: why sine lookup?

A DDS clock generator uses an NCO (a phase accumulator) and takes some number of MSBs, maps through a sine lookup table...

51 comments posted 1yr

posted by jl

51 comments posted 1yr posted by jl

Climate Remediation Engineering - The Ocean Deep Dominates

The carbon stores in earth, sky, and ocean are in chemical equilibrium, so if one attempts to deplete one reservoir, ca...

0 comments posted 1yr

posted by joegwinn

0 comments posted 1yr posted by joegwinn

Climate Remediation Engineering - CO2 Removal Approaches

There have been many approaches to CO2 removal proposed over the years, but very few attempt to estimate the dollar cos...

2 comments posted 1yr

posted by joegwinn

2 comments posted 1yr posted by joegwinn

New IoT products based on LoRa for distributed control

An interesting new family of products. No cloud required. Work in groups, only power supply needed. https://www.albedo.b...

4 comments posted 1yr

posted by soporte

4 comments posted 1yr posted by soporte

RF parts manufacturers

Gentlemen, I'm going to splash out on some new RF connectors and patch leads. A lot of those are rated at good to 11Ghz...

1 comments posted 1yr

posted by cd

1 comments posted 1yr posted by cd

Guardian Almost Makes Sense

which is shocking. https://www.theguardian.com/commentisfree/2025/may/02/american-reindustrialization-manufacturing

7 comments posted 1yr

posted by jl

7 comments posted 1yr posted by jl

Climate Remediation Engineering - Size of Problem

For some time, I've been following the debate on Climate Change and the back and forth on the practicality of removing...

46 comments posted 1yr

posted by joegwinn

46 comments posted 1yr posted by joegwinn

Re: public APs

> I seldom use public wifi.  But, had the occasion to TRY to do so > at a local library branch. > > Dismayed to find no...

2 comments posted 1yr

posted by newspam'''

2 comments posted 1yr posted by newspam'''

LEDs, drama

One of my young engineers just got the first unit of a thing he designed. He was all cautious about bringing it up a st...

12 comments posted 1yr

posted by jl

12 comments posted 1yr posted by jl

Cap C-V test

https://www.dropbox.com/scl/fi/a7425c69k3w8wx8tqjpq5/X110_CV_Test.jpg?rlkey=pc3c0b12ncswv6ajrn148stdk&raw=1 The DUT is...

22 comments posted 1yr

posted by jl

22 comments posted 1yr posted by jl

Anybody would like a load of component data books?

I will be throwing most of them out soon to make space. I posted this a while ago on EEVBLOG and someone in OZ was goin...

4 comments posted 1yr

posted by occassionally-confused

4 comments posted 1yr posted by occassionally-confused

Grand Apagon - Electricity (not) in Spain

Spain suffered a very spectacular near total loss of its national grid yesterday taking parts of France and all of Port...

212 comments posted 1yr

posted by newspam'''

212 comments posted 1yr posted by newspam'''

Teledyne GPD462

I saw a paper (https://apps.dtic.mil/sti/pdfs/ADA030178.pdf) , active antenna referring to a GPD 462 . - Hybrid amplifie...

7 comments posted 1yr

posted by nospam

7 comments posted 1yr posted by nospam