Question

what is the difference between positive and negative feedback loops and give an example of each in computing.

Answer 1

Note:

Positive feedback: If the signal feedback from output is in phase with the input signal, the feedback is called positive feedback.

Negative feedback: If the signal fed back is of opposite polarity or out of phase by 180° with respect to input signal, the feedback is called as negative feedback.

Parameters	Positive Feedback	Negative Feedback
1.Phase shift between feedback signal and input signat	0o OR 360o	180o
2.Input Voltage	Increase	Decrease
3.Output Voltage	Increase	Decrease
4.Voltage gain	Increase	Decrease
5.Feedback signal and input signal	In Phase	Out of Phase
6.Distortion	Increase	Decrease
7.Stability	Decrease	Increase
8.Bandwidth	Decrease	Increase
9.Examples	Oscillator,Schmidit trigger	Amplifires

In The above table the Diffrence between Positive Feedback and Negative Feedback is Shown

By taking some parameters .