The positive feedback circuit in a Wien-bridge oscillator is used to
A) determine the frequency of operation.
B) control the gain of the circuit.
C) bias the negative feedback network.
D) prevent unwanted oscillations.

Question

Quizplus · Accepted Answer

The positive feedback circuit in a Wien-bridge oscillator is specifically used to determine the frequency of operation. This is achieved through the configuration of resistors and capacitors in the Wien-bridge network, which sets the oscillation frequency based on their values.

The Positive Feedback Circuit in a Wien-Bridge Oscillator Is Used