Explanation: When the op-amp is driven by a high input source resistance, the output and input voltage will not be equal due to error at the input. A remedy to this problem is an op-amp with low input bias current and high slew rate should be chosen as a voltage follower. 4. What must be done to block the ac input voltage riding on a dc level?
A. Use RC network
B. Use coupling capacitor
C. Use resistive transducer
D. None of the mentioned
Answer:A
Explanation: When the op-amp is driven by a high input source resistance, the output and input voltage will not be equal due to error at the input. A remedy to this problem is an op-amp with low input bias current and high slew rate should be chosen as a voltage follower. 4. What must be done to block the ac input voltage riding on a dc level?
A. Use RC network B. Use coupling capacitor C. Use resistive transducer D. None of the mentioned
Explanation: In order to block the dc level a coupling capacitor must be used in series with the input of the voltage follower. 5. To get higher input resistance in AC coupled voltage follower,