Electronics Design

Scraping website, encypted traffic

Hi I am working on a pricelist of lcsc.com, so I can select components and com pare prices. I am using Google Web Scrap...

4 comments posted 6yrs

posted by klauskvik

4 comments posted 6yrs posted by klauskvik

Larkin Gets His Wish

It seems someone in Spain was listening to John Larkin. They did a very ex tensive antibody test of 36,000 randomly sel...

1 comments posted 6yrs

posted by gnuarm.deletethisbit

1 comments posted 6yrs posted by gnuarm.deletethisbit

Common Mode Choke Question

I put a CMC on a twisted pair antenna feed line. It was between the antenna matching transformer and the feed line. It...

16 comments posted 6yrs

posted by nojunk

16 comments posted 6yrs posted by nojunk

Vintage transistors and tin whiskers

Gentlemen, I have some old OC171 transistors from an old Eddystone short wave radio I'm restoring. The problem is I sus...

34 comments posted 6yrs

posted by cd

34 comments posted 6yrs posted by cd

LTspice DFLOP model errata?

The only question mark is to whether to call it errata to the model or erra ta to the documentation? In the LT group it...

0 comments posted 6yrs

posted by gnuarm.deletethisbit

0 comments posted 6yrs posted by gnuarm.deletethisbit

Nice work tube amp

Looks good. I would have drilled the holes before mounting the tube sockets, but... https://www.youtube.com/watch?v=cEV1...

12 comments posted 6yrs

posted by DecadentLinuxUserNumeroUno

12 comments posted 6yrs posted by DecadentLinuxUserNumeroUno

OT: Ctrl+wheel stopped zooming in Foxit Reader

I posted this in two computer forums but didn't receive any helpful reply. Does anyone have any idea? The scroll wheel...

10 comments posted 6yrs

posted by nobody

10 comments posted 6yrs posted by nobody

Confusing Data Sheets

I'm playing games with logic devices trying to get them to do more than you might expect. A counter generates a pattern...

0 comments posted 6yrs

posted by gnuarm.deletethisbit

0 comments posted 6yrs posted by gnuarm.deletethisbit

pcb layout software

Anyone familiar with PCB Artist from Advanced Circuits? Good/bad/Indifferent Re. KiCad for example? hanks, -bill m

9 comments posted 6yrs

posted by wwm

9 comments posted 6yrs posted by wwm

Virologist hospitalized with coronavirus believes he got it through his eyes

"We tend to pay attention to the nose and mouth," Dr. Joseph Fair said. "But you know, droplets landing on your eyes ar...

5 comments posted 6yrs

posted by bloggs.fredbloggs.fred

5 comments posted 6yrs posted by bloggs.fredbloggs.fred

Protecting a CMOS gate input

I'm going to use a CMOS bistable chip (not a uP) that's to be manually triggered from time to time by a mechanical swit...

41 comments posted 6yrs

posted by nobody

41 comments posted 6yrs posted by nobody

Laptop Screen Non-repair

I had mentioned that my laptop was falling apart, literally. The top hinge was loose, almost to the point of bothering...

42 comments posted 6yrs

posted by gnuarm.deletethisbit

42 comments posted 6yrs posted by gnuarm.deletethisbit

LTspice Passing Parameters

I'm attempting to construct a model for a 4060 device and the oscillator is n't working. I created a model to explore t...

0 comments posted 6yrs

posted by gnuarm.deletethisbit

0 comments posted 6yrs posted by gnuarm.deletethisbit

optical sweep generator

I want a sweep generator, 800 to 1600 nm, singlemode fiber, for testing photodiodes. Any ideas? I guess we could pulse...

91 comments posted 6yrs

posted by jlarkin

91 comments posted 6yrs posted by jlarkin

Countries Begin Large-Scale Screening for SARS-CoV-2 in Sewage

This is finally in process of large scale implementation: https://www.the-scientist.com/news-opinion/countries-begin-la...

10 comments posted 6yrs

posted by bloggs.fredbloggs.fred

10 comments posted 6yrs posted by bloggs.fredbloggs.fred