A clamper circuit, or clamping circuit, fixes the positive or negative peak values of a signal to a defined level by adjusting the signal’s DC value. This circuit type does not alter the peak-to-peak values but shifts the entire signal up or down to the desired level.
Definition: Clamper circuits are the electronic circuits that shift the dc level of the AC signal. Clampers are also known as DC voltage restorers or level shifter. Clampers are basically classified as positive and negative that includes both biased and unbiased conditions individually.