Inductors, Coils, Chokes 149,364+ Parts

Inductor, Coil, Choke Classification Definition and Overview

Dasenic supplies a variety of important electronic components, including: adjustable inductors, arrays, signal transformers, fixed inductors, wireless charging coils.

What is an inductor?

An inductor is a passive component that can store magnetic energy, usually wound by wire. Its main function is to generate electromotive force through electromagnetic induction and resist changes in current.

Inductor Features and Functions:

Inductance (L): The key parameter of the inductor, measured in Henry (H), determines the inductor's resistance to current changes.

Self-inductance phenomenon: When current passes through an inductor, a magnetic field is generated inside the inductor. When the current changes, the magnetic field also changes, inducing an electromotive force in the inductor.

Inductor Applications: Inductors are widely used in filtering, power regulation, signal coupling, energy storage and other occasions. For example, inductors are used in switching power supplies, radio frequency circuits and audio equipment.

What is a coil?

A coil is actually a form of inductor, which is a structure formed by winding a wire in a certain shape (usually a spiral). In the electrical and electronic fields, coils can be used as inductors or for other purposes, such as windings of antennas and transformers.

Coil Features and Functions:

Coil Versatility: The term coil is more general and can refer to any wire structure formed by winding. Its function depends on the design purpose and can be used to generate electromagnetic fields, store energy, or perform electromagnetic coupling.

Coil Applications: Coils are used in motors, generators, transformers, and radio transmission and reception equipment. Antenna coils and relay coils are common examples.

What is a choke?

A choke is a special type of inductor designed to block or "choke" alternating current of a specific frequency, especially high-frequency signals. It is very common in power lines, mainly used for filtering and reducing electromagnetic interference (EMI).

Choke Features and Functions:

High Impedance: Chokes are designed to present higher impedance at high frequencies, thereby suppressing the passage of high-frequency signals while allowing DC or low-frequency signals to pass.

Choke Application: Chokes are often used as filters in power circuits to reduce high-frequency noise in switching power supplies. In radio frequency circuits, they are used to isolate high-frequency signal interference between different circuit parts.

Inductors, coils, and chokes come in various shapes, sizes, and configurations to meet different circuit requirements.