This document outlines a lecture on clamper circuits. It begins by defining a clamper circuit as one that fixes either the positive or negative peaks of a signal to a defined value by shifting its DC value. It then discusses the basic components of a clamper circuit including a capacitor, diode and resistor. The document goes on to explain the working of a positive clamper circuit and lists the different types of clamper circuits. It concludes by covering the applications of clamper circuits such as in television receivers and test equipment and signaling that the following lecture will focus on positive and negative clamper circuits specifically.