Define the input resistance with feedback for voltage series feedback amplifier?
A. RIF = (1-AB)
B. RIF = (AB-1)
C. RIF = (1+AB)
D. None of the mentioned
Answer:A
Define the input resistance with feedback for voltage series feedback amplifier?
A. RIF = (1-AB) B. RIF = (AB-1) C. RIF = (1+AB) D. None of the mentioned
Explanation: In feedback amplifier, the input resistance of the op-amp with feedback is (1+AB) times that of without feedback.