Electronics and Communication Engineering - Analog Electronics - Discussion


In oscillator circuits the energy feedback to its input terminal from output is

[A]. always in phase with the input signal
[B]. 90° out of phase with the input signal
[C]. 180° out of phase with the input signal
[D]. 270° out of phase with the input signal

Answer: Option C


No answer description available for this question.

Ammar said: (Jun 8, 2019)  
It should be in phase for 180-degree phase change, oscillations won't even start. In fact, it will be negative feedback. This is true only for the non-inverting amplifier. For inverting amplifier, the phase change is important else this will be counted as negative feedback.

Amod said: (Jul 22, 2019)  
A is correct, because phase shift 0 or 360, so in phase with input.

Amulya said: (Oct 18, 2019)  
A is correct answer, please correct.

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