Hi,
I have been working trying to get a bode plot for the loop gain out of PSPICE and I can't seem to get anywhere. Below is an image of my schematic
When I do an AC simulation, I get the following output
At first, this looks good except the gain is on the order of -150dB. I switched out the AC source block for the voltage injection and get the following transient simulation results:
The red is the input to the feedback network and the green is the output voltage.
Shouldn't I be getting a very high gain given the time domain response? (T(s) = V(Green)(s) / V(Red)(s)) Why am I getting a bode plot that has the right shape but at the wrong magnitude?
