Hi guys,
can anyone tell me the reason why we set Vi=0 (short circuit the input side) when we want to find the output impedance Zo but we don't do the same by setting Vo=0 when we find the input impedance Zi????
and why do we let Io=0 (open circuit the output side) to find the gain Av????
thank you
can anyone tell me the reason why we set Vi=0 (short circuit the input side) when we want to find the output impedance Zo but we don't do the same by setting Vo=0 when we find the input impedance Zi????
and why do we let Io=0 (open circuit the output side) to find the gain Av????
thank you