What is the purpose of the DC offset?


Updated: 18th November 2019

DC offset is a mean amplitude displacement from zero. In Audacity it can be seen as an offset of the recorded waveform away from the center zero point. DC offset is a potential source of clicks, distortion and loss of audio volume.

Regarding this, what is meant by null offset voltage?

Input offset voltage is defined as the voltage that must be applied between the two input terminals of an OPAMP to null or zero the output fig. 2, shows that two dc voltages are applied to input terminals to make the output zero.

What is offset voltage of FET?

Re: Offset voltage of MOSFET and BJT. Input offset voltage (Vos) is the differential DC voltage that should be applied between the inputs of an amplifier in order to make the output zero (0 volts with respect to ground).This is for the case of dual supply.
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