Rc Phase Shift Oscillator. Rc phase shift oscillator working and its applications a phase shift oscillator can be defined as. Rc phase shift oscillators use resistor capacitor rc network figure 1 to provide the phase shift required by the feedback signal.
Basically the circuit has an amplifier unit like transistor or op amp along with a feedback network comprising of resistors and capacitors. The circuit is same as passive high pass filter. Thus is also known as rc phase shift oscillator.
The phase shift oscillator circuit consists of a single transistor amplifier section and a rc phase shift network.
Ideally a simple rc network is expected to have an output which leads the input by 90 o. Phase shift oscillators are the oscillators that generate a stable sinusoidal signal at the output. A current with a phase shift of 180 degrees by a small current at transistor amplifier. Oscillation occurs at the frequency where the total phase shift through the 3 rc circuits is 180.
