Class C power amplifier
A class C power amplifier is biased to operate for less than 180° of the input signal cycle, as shown in circuit. The tuned circuit in the output, however, will provide a full cycle of output signal for the fundamental or resonant frequency of the tuned circuit (L and C tank circuit) of the output. The use of such amplifiers is, therefore, limited for a fixed frequency, as occurs in communication circuits, for example. < Operation of a class C circuit is not intended primarily for large signal or power amplifiers.