MCQ Practice Question

Analog Electronics Operational Amplifier Applications

A precision rectifier using an op-amp is useful for small signals mainly because feedback can?

ACompensate much of the ordinary diode forward-drop error
BMake diode current exactly zero
CConvert every signal to digital form
DEliminate the need for a power supply

Correct Answer: A. Compensate much of the ordinary diode forward-drop error

Explanation: Placing the diode within an op-amp feedback arrangement allows accurate rectification of signals much smaller than a normal diode's forward drop.

Reference: Standard analog electronics: precision rectifier