Explanation: Negative halfwave rectifier circuit with two diodes are used so that the output of the op-amp does not saturate. Thus, minimizes the response time and increases the operating frequency range. 11. Why a voltage follower stage is connected at the output of the negative small signal half wave rectifier?
A. Due to Non-uniform input resistance
B. Due to Non-uniform output resistance
C. Due to Uniform output voltage
D. None of the mentioned
Answer:A
Explanation: Negative halfwave rectifier circuit with two diodes are used so that the output of the op-amp does not saturate. Thus, minimizes the response time and increases the operating frequency range. 11. Why a voltage follower stage is connected at the output of the negative small signal half wave rectifier?
A. Due to Non-uniform input resistance B. Due to Non-uniform output resistance C. Due to Uniform output voltage D. None of the mentioned
Explanation: The output resistance of the circuit is non-uniform as it depends on the state of diode. That is, the output impedance is low when diode is on and high when diode is off. 12. A circuit with a predetermined dc level is added to the output voltage of the op-amp is called