DC offset

107

01:53:25

1kHz 5VAC summed with a 5VDC signal using an inverting amplifier.

The result is an alternating 1kHz waveform being off-set by the DC signal which pushes the signal to alternate between the -5V peak point instead of the 0V point.

To solve DC off-set problems (especially for digital audio) the DC input voltage has to be measured then attenuated in order for the waveform to alternate at the 0V point. 

published 11 years ago

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