Class C Amplifier Block Diagram. Due to its heavy audio distortion class c amplifiers are commonly used in high frequency sine wave oscillators and certain types of radio frequency amplifiers where the pulses of current produced at the amplifiers output can be converted to complete sine waves of a particular frequency by the use of lc resonant circuits in its collector circuit. In this article class c power amplifier circuit is designed stimulate using orcad capture.

As a result the transistor will start conducting only after the input signal amplitude has risen above the base emitter voltage vbe 0 7v plus the downward bias voltage caused by rb. Class c power amplifier. Power amplifier circuits output stages are classified as a b ab and c for linear designs and class d and e for switching designs.

Class a power amplifier.

Due to its heavy audio distortion class c amplifiers are commonly used in high frequency sine wave oscillators and certain types of radio frequency amplifiers where the pulses of current produced at the amplifiers output can be converted to complete sine waves of a particular frequency by the use of lc resonant circuits in its collector circuit. The efficiency of class c amplifier is much more than the a b and ab. The circuit diagram of a class a power amplifier is shown in fig. Biasing resistor rb pulls the base of q1 further downwards and the q point will be set some way below the cut off point in the dc load line.