What is free running oscillator?

A free-running oscillator is an electronic circuit or device that generates a periodic waveform without requiring an external clock signal. It typically relies on the natural oscillation of reactive components, such as capacitors and inductors, to produce a continuous output signal, often in the form of sine, square, or triangle waves. Common examples include crystal oscillators and LC oscillators, which are widely used in timing applications and signal generation. The frequency of oscillation is determined by the values of the reactive components in the circuit.