Inductors, coils, and chokes are all closely related components that are based on the fundamental principle of electromagnetic induction.
An inductor is a passive electronic component that stores energy in the form of a magnetic field. Inductors are commonly used in applications such as energy storage, noise filtering, and as components in resonant circuits.
Coils are simply windings of wire without a magnetic core. They are similar to inductors but lack the core material. Coils are commonly used as components in transformers, electromagnets, and antenna systems.
Chokes, also known as line reactors or simply inductors, are specialized inductors designed to provide high impedance to alternating current (AC) while allowing direct current (DC) to pass through relatively unimpeded. Chokes are commonly used in power supply circuits to filter out AC ripple or noise, allowing a smooth DC output.
Inductors, coils, and chokes come in various shapes, sizes, and configurations to meet different circuit requirements.