hello,
i have to measure the gain, the input and output impedance of several op-amp circutis (inverter, non inverter, schmitt,...)
what i do is to put 2 proves in the input and output of the op-amp.
and then use Single Frequency AC Analysis and adding expressions like: Vin/Iin=Zin
Vout/Iout=Zout
and Vout/Vin=Gain
I'm right?
And there is no problem with the first circuit, the results are ok. but when I open other circuits (after closing the first one) to do the same i get the same results as for first circuit??
Is there a problem with this Single Frequency AC Analysis.
Any advice will be appreciated! Thanks!
