Inductors

Ferromagnetic core inductor A variety of types of ferrite core inductors and transformers Ferromagnetic-core or iron-core inductors use a magnetic core made of a ferromagnetic or ferrimagnetic material such as iron or ferrite to increase the inductance.

Inductors have values that typically range from 1 µH (10 −6 H) to 1 H. Many inductors have a magnetic core made of iron or ferrite inside the coil, which serves to increase the magnetic field and thus the inductance.

Inductors Tank inductor in a tuned circuit in a shortwave radio transmitter main Inductors or reactors are coils which generate a magnetic field which interacts with the coil itself, to induce a back EMF which opposes changes in current through the coil.

Many inductors used in radio applications (usually less than 100 MHz) use adjustable cores in order to tune such inductors to their desired value, since manufacturing processes have certain tolerances (inaccuracy).

In 1971, Leon Chua theoretically proposed the memristor as the fourth fundamental circuit element (after resistors, capacitors, and inductors).

A disadvantage of passive PFC is that it requires larger inductors or capacitors than an equivalent power active PFC circuit. citation citation.

Air core inductors can use sliding contacts or multiple taps to increase or decrease the number of turns included in the circuit, to change the inductance.

Analysis of resistive circuits is less complicated than analysis of circuits containing capacitors and inductors.

As a result, inductors always oppose a change in current, in the same way that a flywheel opposes a change in rotational velocity.

At high currents, iron core inductors also show gradual departure from ideal behavior due to nonlinearity caused by magnetic saturation of the core.

Dielectric relaxation in changing electric fields could be considered analogous to hysteresis in changing magnetic fields (for inductors or transformers ).

Electrical elements such as inductors and capacitors used in electrical analog computers had to be carefully manufactured to reduce non-ideal effects.

Ferromagnetic core inductors driven into saturation can also be used at lower frequencies.

Filters consisting of linear capacitors and inductors can prevent harmonic currents from entering the supplying system.

Finally, Heaviside made the proposal (1893) to use discrete inductors at intervals along the line.

For example, audio signals can suffer intermodulation distortion in saturated inductors.

For example, some low phase noise oscillators use them to range-switch inductors.

If a load had a capacitive value, inductors (also known as reactors in this context) are connected to correct the power factor.

In addition the fractal nature of the antenna shrinks its size, without the use of any components, such as inductors or capacitors.

Inductor networks main Inductors in a parallel configuration each have the same potential difference (voltage).