what are the advantages of using negative feedback in amplifier?
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The applied negative feedback can improve its performance (gain stability, linearity, frequency response, step response) and reduces sensitivity to parameter variations due to manufacturing or environment. Because of these advantages, manyamplifiers and control systems use negative feedback.
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Feedback reduces the overall gain of a system with the degree of reduction being related to the systems open-loop gain. Negative feedback also has effects of reducing distortion, noise, sensitivity to external changes as well as improving system bandwidth and input and output impedances.
: Less frequency distortion, Less phase distortion,Increase stability
Increase bandwidth Decrease noise these are advantages of negative feedback over positive feedback.
: Less frequency distortion, Less phase distortion,Increase stability
Increase bandwidth Decrease noise these are advantages of negative feedback over positive feedback.
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