inductor


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inductor,

electric device consisting of one or more turns of wire and typically having two terminals. An inductor is usually connected into a circuit in order to raise the inductanceinductance,
quantity that measures the electromagnetic induction of an electric circuit component; it is a property of the component itself rather than of the circuit as a whole.
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 to a desired value. Since inductance is a property that varies with frequency, inductors range from a single loop in a length of wire (used at ultrahigh frequencies), through spirals in the copper coating of an etched circuit board (used at very high frequencies), to large coils of insulated wire wound onto iron or ferrite cores. For radio use, inductors often have air cores to avoid the losses caused by magnetic hysteresis and by eddy currents that occur when solid cores are used. Solid cores, however, offer the advantage of raising the inductance that can be obtained from a coil of a given number of turns of wire. Ferrites are often used, since they are nonconductors and are immune to eddy currents.

Inductor

A device for introducing inductance into a circuit. The term covers devices with a wide range of uses, sizes, and types, including components for electric-wave filters, tuned circuits, electrical measuring circuits, and energy storage devices.

Inductors are classified as fixed, adjustable, and variable. All are made either with or without magnetic cores. Inductors without magnetic cores are called air-core coils, although the actual core material may be a ceramic, a plastic, or some other nonmagnetic material. Inductors with magnetic cores are called iron-core coils. A wide variety of magnetic materials are used, and some of these contain very little iron.

In fixed inductors coils are wound so that the turns remain fixed in position with respect to each other. Adjustable inductors have either taps for changing the number of turns desired, or consist of several fixed inductors which may be switched into various series or parallel combinations. Variable inductors are constructed so that the effective inductance can be changed. Means for doing this include (1) changing the permeability of a magnetic core; (2) moving the magnetic core, or part of it, with respect to the coil or the remainder of the core; and (3) moving one or more coils of the inductor with respect to one or more of the other coils, thereby changing mutual inductance. See Inductance

inductor

[in′dək·tər]
(control systems)
(embryology)

Inductor

A device for introducing inductance into a circuit. The term covers devices with a wide range of uses, sizes, and types, including components for electric-wave filters, tuned circuits, electrical measuring circuits, and energy storage devices.

Inductors are classified as fixed, adjustable, and variable. All are made either with or without magnetic cores. Inductors without magnetic cores are called air-core coils, although the actual core material may be a ceramic, a plastic, or some other nonmagnetic material. Inductors with magnetic cores are called iron-core coils. A wide variety of magnetic materials are used, and some of these contain very little iron.

In fixed inductors coils are wound so that the turns remain fixed in position with respect to each other. Adjustable inductors have either taps for changing the number of turns desired, or consist of several fixed inductors which may be switched into various series or parallel combinations. Variable inductors are constructed so that the effective inductance can be changed. Means for doing this include (1) changing the permeability of a magnetic core; (2) moving the magnetic core, or part of it, with respect to the coil or the remainder of the core; and (3) moving one or more coils of the inductor with respect to one or more of the other coils, thereby changing mutual inductance.

inductor

a component, such as a coil, in an electrical circuit the main function of which is to produce inductance

inductor

A coil of wire that generates a magnetic field when current is passed through it. The strength of the magnetic field is measured in henrys (H). When the current is removed, as the magnetic field disintegrates, it "induces" a brief current in the opposite direction of the original. Thus "induction" is caused by the opening and closing of a DC circuit or the continuous changing of directions in an AC circuit.

High-Frequency Filters
An induction coil impedes the flow of high-frequencies in an AC circuit, which is why inductors are used as surge protectors, choking off any high-frequency shifts. The tiny donuts placed on the end of signal cables and the load coils placed into telephone networks are examples. See induction.
References in periodicals archive ?
For our tests, we assumed the internal resistance for both inductors, 0.16 [OMEGA] for inductor [L.sub.1] and 0.1 [OMEGA] for inductors [L.sub.2] and [L.sub.3].
where n = 1, 2 are the inductor and armature indexes, respectively; [R.sub.n], [T.sub.n], [L.sub.n] are the active resistance, temperature and inductance of the n-th element; [M.sub.12] is the mutual inductance between the inductor and the armature, moving along the z axis with speed [v.sub.z];
New Yorker Electronics is an AS9120B and ISO 9001:2015 certified source of capacitors, resistors, semi-conductors, connectors, filters, inductors and more, and operates entirely at heightened military and aerospace performance levels.
The measured results of insertion loss for all inductor designs at 25[degrees] C are shown in Figure 3.
Selection of power inductor with the minimum possible DC resistance is important after the calculated values for inductance L and inductor currents.
To improve selectivity in wide bandwidth, techniques of introducing transmission zeros to increase stopband by adding shunt capacitor, serial inductor, or shunt inductor have been presented [22-25].
The L of the ferrite inductor can be given by the sum of the air-core inductance ([L.sub.AC]) and the inductance gain ([DELTA]L) from the high-permeability ferrite in Eq.
Major players in the inductor market are Vishay Intertechnology (U.S.), TDK Corporation (Japan), Delta Electronics, Inc.
For MSVPWM2, the inductor is charged during shoot-through period and inductor current rises, while the inductor discharges during non-shoot-through period and inductor current declines.
After this small signal analysis it is confirmed by the author that the carbon fiber material could be used for future fabrication of inductor.
Every total flux of inductor winding consists of three parts: one is the self-flux and the others are generated by the other two inductor windings.

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