Pulse and Digital Circuits

5.1 INTRODUCTION

When a signal is transmitted through a capacitive coupled network, the dc component associated with the input is lost in the output since the capacitor blocks the dc. If the dc component needs to be restored, a clamping circuit is used. Thus, clamping circuits reintroduce the dc component lost during transmission through a capacitive coupled network and hence, are called either dc restorers or dc re-inserters. The output reaches the steady-state value in a few cycles after the application of the input to the clamping circuit (transient period). Circuits that clamp the positive peak of the signal to the zero level are called negative clampers and those that clamp the negative peak of the signal to the zero level are called positive ...