Negative feedback is a situation in which a signal that is proportional to the output signal but has a phase that opposes the input signal is fed back to the input of an amplifier, or other circuit.
The negative feedback into the difference amplifier allows the amplifier to compare the input to the actualoutput.
At the transistor level, device noise can be sensed and reduced with negative feedback.
Negative feedback is a situation in which a signal that is proportional to the output signal but hasa phase that opposes the input signal is fed back to the input of an amplifier, orother circuit.
feedback
Related wordsCompare negative feedback with positive feedback, which is feedback in which the returning signal improves the effect of the inputsignal.