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I2C relay boards.

I have need for a 8-16 channel I2C in, relay out expansion board. We're now using: but the shipping is insane. So I'm s...
16 comments posted 8yrs
posted by wb8foz
16 comments posted 8yrs posted by wb8foz

Potentiometer question

I acquired a Peavey commercial rack mount equalizer from the mid to late 80s. It appears to work well, aside from two p...
3 comments posted 8yrs
posted by oldschool
3 comments posted 8yrs posted by oldschool

Li-Polymer Batteries

I'm looking at buying these batteries for a test project and they ask the buyer to choose between battery types 357090...
48 comments posted 8yrs
posted by gnuarm
48 comments posted 8yrs posted by gnuarm

Contactors/Relays

I have futilely been seeking 100A 3ph NC/Form B relays/contactors. It seems they are all stashed in the "unicorn eggs"...
31 comments posted 8yrs
posted by wb8foz
31 comments posted 8yrs posted by wb8foz

recuperated transistors : igbt or mosfet ?

Hi, I recuperated a lot of semiconductors but I now face the identification of these item, principally mosfet and igbt....
4 comments posted 8yrs
posted by alpibucky
4 comments posted 8yrs posted by alpibucky

Pre-1979 Nat Semi 4-pin sensor

I have a 4-pin sensor with a Natioinal Semiconductor logo and /831 on the body. The body has the loose appearance of an...
0 comments posted 8yrs
posted by legg
0 comments posted 8yrs posted by legg

IC header cables

I've seen what I need: a 16 pin DIP header that plugs into an ordinary IC socket, but one with a ribbon cable coming of...
6 comments posted 8yrs
posted by wb8foz
6 comments posted 8yrs posted by wb8foz

Needed: 100A contactors

I'm seeking some 80-100A contactors. 3P, Form B (or C), 24VAC coils, DIN rail mounting. Any suggested PN's & sources? -...
12 comments posted 8yrs
posted by wb8foz
12 comments posted 8yrs posted by wb8foz

SMD ident, bipolar chars, package types etc

I notice that smd identification tools are disappearing from the web for one reason or another. are difficult At the sa...
1 comments posted 8yrs
posted by legg
1 comments posted 8yrs posted by legg

SOT23-5 marked V5AE

SOT23-5 marked V5AE Any ideas? RL
2 comments posted 8yrs
posted by legg
2 comments posted 8yrs posted by legg

Is there an 18V LM358?

I made a circuit with some LM358, where I need very close to the maximum 32V power supply. It worked as expected up to...
1 comments posted 9yrs
posted by fake
1 comments posted 9yrs posted by fake