At lower frequency the contribution of AoL is zero. So, AoL×ß >0 and obviously AF < AoL and system is stable. 13. Mention the phase condition that leads to sustained oscillation
A. ∠-Aß =0
B. All of the mentioned
C. ∠-Aß = multiple of 2π
D. ∠Aß = odd multiple of π
Answer:A
At lower frequency the contribution of AoL is zero. So, AoL×ß >0 and obviously AF < AoL and system is stable. 13. Mention the phase condition that leads to sustained oscillation
A. ∠-Aß =0 B. All of the mentioned C. ∠-Aß = multiple of 2π D. ∠Aß = odd multiple of π
Explanation: The circuit leads to oscillation if the characteristic equation (1+AoL×ß )=0