Oscillator circuits are electronic circuits that generate a continuous, oscillating signal, usually in the form of a sine wave or square wave. They are essential in various applications, including clocks, radios, and signal generators. The basic components of an oscillator include an amplifier and a feedback network, which work together to produce a stable frequency. There are different types of oscillator circuits, such as LC oscillators, RC oscillators, and crystal oscillators. Each type uses different components to determine the frequency of oscillation. These circuits are crucial in modern electronics, enabling precise timing and frequency control in devices like computers and communication systems.