Testing op amps

[CheapSuitG]

Hello there!

A buddy of mine is a luthier, and the guy who had the space next door passed away(He was mid late 80s) The neighbor built biofeedback systems and some pretty odd experimental stuff. When his kids were clearing out the space, my friend grabbed what he thought I could use and there was a lot.

There are carbon comp resistors, diodes, germanium and silicon transistors and some op amps like 3 LM308Ns.

What’s the easiest or best way to test op amps before using them in a build?

Thanks!

 

[Aentons]

Breadboard a simple buffer and alligator clip to an open jack, maybe?

 

[Erik S]

Hello there!

A buddy of mine is a luthier, and the guy who had the space next door passed away(He was mid late 80s) The neighbor built biofeedback systems and some pretty odd experimental stuff. When his kids were clearing out the space, my friend grabbed what he thought I could use and there was a lot.

There are carbon comp resistors, diodes, germanium and silicon transistors and some op amps like 3 LM308Ns.

What’s the easiest or best way to test op amps before using them in a build?

Thanks!

I bought one of these when I was working on an ARP 2600 that had a bunch of failed op amps.

Synthchaser Op Amp Tester

By popular demand, I’ve made a run of the op-amp testers that I built and use in many of my videos. This tests many single, dual, and quad op-amps with standard pinouts. Each working op-amp…

synthchaser.com

I imagine there are schematics around for something similar.

That guy has a bunch of videos on synth repair that were super helpful to me, so I was happy to throw him a few bux.

If you're socketing your op-amps, you could always just test em in a pedal too.

 

[Harry Klippton]

Any reason to believe they wouldn't work though?

 

[CheapSuitG]

Any reason to believe they wouldn't work though?

Lots of dust, in an organizer free range. I like to be safe.

 

[temol]

Lots of dust, in an organizer free range. I like to be safe.

Before you swallow them? Sorry, I couldn't resist. Maybe you have a pedal where the opamp can be swapped? Single opamp.

 

[CheapSuitG]

Before you swallow them? Sorry, I couldn't resist. Maybe you have a pedal where the opamp can be swapped? Single opamp.

Or I could swallow them and whatever makes it through and out should be good?

 

[mckillacuddy]

lm308's from an elderly experimentalist's workshop? That's pure mojo. Build it