Assume a feedback oscillator uses an inverting amplifier and a sample of the output is fed back. The feedback network needs to shift the phase
A)270°
B)180°
C)0°
D)90°

Question

Quizplus · Accepted Answer

For an inverting amplifier, which already provides a 180° phase shift, an additional 180° phase shift from the feedback network is necessary to achieve the total 360° phase shift required for oscillation. This ensures the feedback is positive and the system can sustain oscillations.

Assume a Feedback Oscillator Uses an Inverting Amplifier and a Sample