Exam Question
With the aid of a block diagram, briefly describe the effect which negative voltage feedback has on an amplifier and state the advantages resulting from the use of negative feedback. (16)
Class 2 (2nd Engineer)
MET
📅 Oct 2024
Reference Answer
Effects of Negative Voltage Feedback on an Amplifier
Reduction in Gain: The overall closed-loop gain is lower than the open-loop gain (A).
Gain Stability: Closed-loop gain becomes less sensitive to variations in A (caused by temperature changes, transistor aging, etc.).
Improved Linearity: Distortion is reduced since feedback forces the amplifier to correct its own errors.
Reduction in Gain: The overall closed-loop gain is lower than the open-loop gain (A).
Gain Stability: Closed-loop gain becomes less sensitive to variations in A (caused by temperature changes, transistor aging, etc.).
Improved Linearity: Distortion is reduced since feedback forces the amplifier to correct its own errors.
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