Franklin Oscillator Circuit Diagram:

A simple L-C oscillator, called the Franklin oscillator and its circuit diagram is shown in Fig. 21.12.

Franklin Oscillator Circuit Diagram

Here two CE amplifier stages are employed to provide 360° phase shift from input to output. The values of the different components used in the circuit are chosen to provide overall loop gain of the two stages | AB | slightly greater than unity.

The frequency of oscillation is given by

Franklin Oscillator

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