Abstract: A clamping circuit in which a signal such as a line sequential color television signal is clamped to a reference, such as a black level by means of a corrective signal which is the integrated output of a current multiplier. The gain of the multiplier, which is fed with a signal corresponding to the difference between the signal that is to be clamped and the reference, varies from a maximum to a minimum during a period of clamping. Large initial error in the signal can be rapidly corrected and the final corrective signal corresponds to the average error during the period of clamping.