Inside was a simple servo, with a differential amplifier comparing the feedback via a potentiometer from the mechanism with the amplified input. The recorders dated from the early 1960s ...
Differential amplifiers are used in myriad applications, including microphones, simulation, analog-to-digital conversion and automatic gain control. See op amp. THIS DEFINITION IS FOR PERSONAL USE ...
The op amp — short for operational amplifier — is a packaged differential amplifier. The ideal op amp — which we can’t get — has infinite gain and infinite input impedance. While we can ...
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