Question

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

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

Homework Answers

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 .

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