Phase Shift Oscillator

To study the RC Phase shift oscillator , and observe its output waveform on C R O.
The Phase-shift Oscillator, produces a sine wave output signal using regenerative feedback obtained from the resistor-capacitor combination. This regenerative feedback from the RC network is due to the ability of the capacitor to store an electric charge.
By varying one or more of the resistors, or capacitors in the phase-shift network, the frequency can be varied , and generally this is done by keeping the resistors the same ,and using a 3-ganged variable capacitor.