FET configurations

Thread Starter

Xufyan

Joined Aug 3, 2010
114
Hello I have a question regarding JFET configurations,

in JFET Fixed Biased Configuration when we find Zo , we set Vi=0 so Vgs and gmVgs equals to '0'.

While in Self-Bias configuration when we set Vi=0 in order to find Zo , why gmVgs is not open circuited like Fixed Bias ??
 
Top