Clamper

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A clamper is an electric circuit that prevents a signal from exceeding a certain defined magnitude. A diode clamp relies on a diode, which conducts electric current in only one direction; resistors and capacitors in the circuit can be used to alter the dc level at the clamper output.

[edit] Clamping for input protection

Clamping can be used to adapt an input signal to a device that cannot make use of or may be damaged by the signal range of the original input.

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