Hello everyone,

Reading this book about negative feedback loop, the Author mentioned that as in the red box that all the sum of phases( loop gain=commulative gain) must be multiple of 360 degrees which confuses me.

I know that when the feedback is at -180 phases and subtracting from the input signal makes the difference V(in+)-V(in-) increasing which leads to oscillations but here he is mentioning 360!

Reading this book about negative feedback loop, the Author mentioned that as in the red box that all the sum of phases( loop gain=commulative gain) must be multiple of 360 degrees which confuses me.

I know that when the feedback is at -180 phases and subtracting from the input signal makes the difference V(in+)-V(in-) increasing which leads to oscillations but here he is mentioning 360!

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