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Voltage Regulators in Parallel

Gentlemen, I have a bunch of 12VDC and 5VDC voltage regulator ICs in TO-220 packages. IIRC, I think they're about 1A ea...
40 comments posted 3yrs
posted by cd
40 comments posted 3yrs posted by cd

Testing photoreceivers

Hi, all, We do a lot of photoreceiver testing, so we've gotten reasonably good at it, including building several test g...
0 comments posted 3yrs
posted by pcdhSpamMeSenseless
0 comments posted 3yrs posted by pcdhSpamMeSenseless

OT. Saturday Night Live

There was a time long ago when Saturday Night Live was must see TV. Not so much anymore now that I have a white head. Me...
3 comments posted 3yrs
posted by deanh6929
3 comments posted 3yrs posted by deanh6929

PSU Design

Gentlemen, I know this will upset and disappoint a certain antipodean contributor here, but I would like, if I may, to...
104 comments posted 3yrs
posted by cd
104 comments posted 3yrs posted by cd

power pics

Power to a bakery: https://www.dropbox.com/s/el1zuawood89fic/Tartine_Power.jpg?raw=1 House being renovated: https://www...
7 comments posted 3yrs
posted by jlarkin
7 comments posted 3yrs posted by jlarkin

density

Somebody was whining about PCB density. I want to do a board with about 105 relays. I'd prefer 130 but that's not going...
21 comments posted 3yrs
posted by jlarkin
21 comments posted 3yrs posted by jlarkin

OT. Quasar Mystery Solved.

Earth has about 5 billion years left if the star gazers are right.
2 comments posted 3yrs
posted by deanh6929
2 comments posted 3yrs posted by deanh6929

OT: Geo-Financial Flows in America

This is interesting. A clear trend emerging of people and businesses leaving the worst Blue states for the best of the R...
10 comments posted 3yrs
posted by cd
10 comments posted 3yrs posted by cd

dogfooding

https://en.wikipedia.org/wiki/Eating_your_own_dog_food Some of my guys want to build a bunch of special test sets to do...
6 comments posted 3yrs
posted by jlarkin
6 comments posted 3yrs posted by jlarkin

Poor man's TDR

Can anyone think of a cunning quick and dirty way to do TDR on modest length 3 - 10 m cables to look for breaks ideally...
19 comments posted 3yrs
posted by newspam'''
19 comments posted 3yrs posted by newspam'''

Stalled EV

The first link is to a story about a tow truck driver towing his first EV. This EV driver would've been ok if he had a...
107 comments posted 3yrs
posted by deanh6929
107 comments posted 3yrs posted by deanh6929

pick-and-place thru-hole parts?

I'm imagining a board with about 100 small relays. The relays would have ordinary pins poking out the bottom of the can...
8 comments posted 3yrs
posted by jlarkin
8 comments posted 3yrs posted by jlarkin

Short track and impedance matching

Hi We have a GaN FET that is dumping voltage into a capacitor. The GaN drain is connected to 50V, and the capacitor is...
20 comments posted 3yrs
posted by klauskvik
20 comments posted 3yrs posted by klauskvik