Christiaan27

Quick follow up - turns out it was a lousy TL072. While I was at it, I tested a few LED combinations. Green LED in D1 seems to work...

Yes, D1 was originally yellow 3mm, but that didn't seem to be working. I read someone else had better luck with a green LED so I removed...

I am having similar issues where the sag circuit seems to do a whole lot of nothing, including at lower gain settings. The only way I...