Inductor Coils

Inductor Coils

An inductor coil, also known as a reactor, is a passive electrical component that stores energy in a magnetic field when electric current flows through it. It consists of a coil of conducting wire, typically copper, wrapped around a core made of a magnetic material such as iron. The inductor coil is used in a wide range of electronic applications, including power supplies, filters, and oscillators. The inductor coil works on the principle of electromagnetic induction, which states that a changing magnetic field induces an electromotive force (EMF) in a nearby conductor. When an electric current flows through the coil, it generates a magnetic field around the coil. The magnetic field stores energy in the form of magnetic flux, which is proportional to the current flowing through the coil. When the current stops flowing, the magnetic field collapses, and the stored energy is released back into the circuit. The inductor coil is characterized by its inductance, which is a measure of the amount of energy stored in the magnetic field for a given current. The inductance is determined by the number of turns in the coil, the cross-sectional area of the coil, and the permeability of the core material. The inductance is measured in henries (H), and typical values range from microhenries (μH) to millihenries (mH). In summary, an inductor coil is a passive electrical component that stores energy in a magnetic field when electric current flows through it. It is used in a wide range of electronic applications and is characterized by its inductance, which is a measure of the amount of energy stored in the magnetic field for a given current.

inductance, magnetic field, electromagnetic induction, passive component, energy storage

— Jacob Smith

CITATION : "Jacob Smith. 'Inductor Coils.' Design+Encyclopedia. https://design-encyclopedia.com/define/inductor-coils?E=354729 (Accessed on October 14, 2026)"