Which among the following circuit has the highest input resistance?
A. Voltage follower
B. Inverting amplifier
C. Differential amplifier
D. None of the mentioned
Answer:A
Which among the following circuit has the highest input resistance?
A. Voltage follower B. Inverting amplifier C. Differential amplifier D. None of the mentioned
Explanation: Voltage follower has the highest positive input resistance of any op-amp circuit. For this reason it is used to reduce voltage error caused by source loading. 2. Find the bias current from the given circuit