Hi guys please help me on this.......
Discussing compensation of amplifiers we find articles which says that --- "the amplifier requires compensation because its open loop gain is still higher at frequencies where the internal phase shift are reaching 180 degrees."
So the deal is to reduce the open loop gain lower than unity (in order to prevent sustained oscillation) before the accumulated phase shift reaches 180 degree at higher frequencies..
The thing which I am not getting is how exactly phase shift grows larger with the increase in frequency....
Thanks.....
Discussing compensation of amplifiers we find articles which says that --- "the amplifier requires compensation because its open loop gain is still higher at frequencies where the internal phase shift are reaching 180 degrees."
So the deal is to reduce the open loop gain lower than unity (in order to prevent sustained oscillation) before the accumulated phase shift reaches 180 degree at higher frequencies..
The thing which I am not getting is how exactly phase shift grows larger with the increase in frequency....
Thanks.....