An electrical circuit known as an oscillator generates a periodic signal. An oscillator is referred to as a sinusoidal oscillator if it generates sinusoidal oscillations.
It transforms the energy coming in from a DC source into an AC signal's output energy.
The frequency and amplitude of this periodic pulse will be fixed.
There are four types of sinusoidal oscillators are: 4.1 Tuned circuit oscillators : Tuned circuit oscillators consist of inductors and capacitors. 4.2 RC oscillators: RC circuits are consist of resistors and capacitors. 4.3 Crystal oscillators : Crystal oscillators are made of quartz crystals. 4.4 Negative resistance oscillators : In negative resistance oscillators use negative resistance characteristics.