Re: Simple Op-Amp Tester

Posted by Ciaran Haslett on
URL: http://guitar-fx-layouts.238.s1.nabble.com/Simple-Op-Amp-Tester-tp27924p30567.html

I think there would be too many variables in circuit design using pampas that it would be hard to come up with a "one size fits all" plug in solution tester.  The supporting circuitry is different from pedal to pedal, different uses for the IC (buffer, amplifier etc).  Then the loads both before and after the opamp affects the voltage you'll see on the pins  AND the socket measurements will look very different to measurements taken with an IC in circuit!

The only thing you can really do without the IC inserted is measure the supply/ground pins I think.  They would be the only pins with a consistent reading between IC in situ or not.  When I'm building a vero I always have my common probe on my DMM jammed into my test box ground point so I'm only fiddling with the positive probe.  Makes taking readings a lot less hassle but yeah...a quick plug in, lights on, everything grand tester would be great.