Noise Rejection Amplifier.

226

02:45:37

This circuit demonstrates one of the main advantages of the differential amplifier, noise rejection. Assume we have a balanced input in the amplifier (ie one input is our signal and the other one is a copy of the signal shifted by 180 degrees) , due to proximity the two signals will pick similar noise . Then since the output of the amplifier is differential,  the two noise components will cancel out , while the output signal will be added with its copy ( V1-(V1)=2V1)  resulting in a  amplified noise free signal.

published 5 years ago

beslan1980

5 years ago

Very good

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