For a three pole feedback amplifier, loop gain function is given by: T (f) = beta (100) / ( 1 + j f / 5 Times 10 4 ) ( 1 + j f / 10 5 ) ( 1 + j f / 5 Times 10 5 ) Since we now know the phase at unity loop gain, find out whether the circuit stable or not? Solution All the poles are in Left of S- plane i.e. System is stable.

1. For a three pole feedback amplifier, loop gain function is given by: T (f) = beta (100) / ( 1 + j f /
5 Times 10 4 ) ( 1 + j f / 10 5 ) ( 1 + j f / 5 Times 10 5 ) Since we now know the phase at unity
loop gain, find out whether the circuit stable or not?
Solution
All the poles are in Left of S- plane i.e. System is stable