Op amp trouble shooting

[Bose(o)]

Pinout diag:

[jez]

I would try more voltage if I was You. Try 2x pp3 type battery with suitable supply decoupling caps (100Uf or more) to give + & - 9Volts.

[Alcaid]

Originally posted by jez
I would try more voltage if I was You. Try 2x pp3 type battery with suitable supply decoupling caps (100Uf or more) to give + & - 9Volts.

The Cmoy works good with a 9v battery. Don't give upgrade tips, before he's got the basics right.

Bose(o): Have you got a digicam, so we can have a look at your Cmoy to see if there's any mistakes? It's amazing what your own eyes can miss, that a fresh pair of eyes can spot in a sec.

And don't give up! Op-amps are just the beginning of a great hobby

[carlosfm]

Originally posted by Bose(o)
I can get audio on the -'ve voltage rail, and I'm not even sure how, but there's more audio there than from the output.

TIA

Do you have a short between pins 3 and 4?
Are you sure you connected R2 to ground and NOT to the negative voltage rail?