Some of you may know, I'm working on a clipping detector circuit...Well I haven't used OP amps before in the real world and I cannot ge a simple expiriment to work.
Heres what I tried:
9 volt or 7 AAs in series for the power supply, a non split power supply just 0v GND and the pos of the batt...
I tried Grounding the inputs in common mode from the power supply GND so that I can see the offset..I get the full saturated output though. If I attatch a negative feedback lead I believe I get .40ma but a potentiometer dosn't change the value when I turn it and I have it connected to the null pins. So is it possible that without a negative feedback lead I will get saturation at the output while the inputs are grounded? And why dosn't the pot change the offset value?
Heres what I tried:
9 volt or 7 AAs in series for the power supply, a non split power supply just 0v GND and the pos of the batt...
I tried Grounding the inputs in common mode from the power supply GND so that I can see the offset..I get the full saturated output though. If I attatch a negative feedback lead I believe I get .40ma but a potentiometer dosn't change the value when I turn it and I have it connected to the null pins. So is it possible that without a negative feedback lead I will get saturation at the output while the inputs are grounded? And why dosn't the pot change the offset value?