Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Fixed Inductors

Fixed inductors are components used in electrical circuits to provide inductance, a property of circuits that opposes changes in current. The main types of fixed inductors are air coils, toroidal cores, shielded encased, spiral or surface-mounted, and other more exotic designs. An example of a fixed inductor is the 4922R-38K.

The 4922R-38K is a radial-leaded air core inductor, with a nominal inductance of 38kΩ at 1kHz. It is commonly available in both small(7.5mm) and large (10.5mm) sizes. The 4922R-38K is designed to operate in circuits with up to 1000V of DC bias, and its winding is made up of silicon-iron wire. The insulation of the wire is reinforced phenolic, providing excellent electrical and mechanical strength.

The 4922R-38K is primarily used in switched-mode power supplies, as well as HF power amplifiers and pulse transformers. Part of the reason for its wide use in these applications is the fact that it has excellent high frequency characteristics with low losses due to its air core design. In switched-mode power supplies, they are used to provide the necessary AC-link between the power source and the switch.

In terms of its working principle, an air core inductor turns electrical current into a magnetic field. When the current through an inductor changes, the magnetic field also changes, and this induces a voltage across the inductor that opposes the change in current. This effect is described mathematically by Faraday’s Law, which states that the electromotive force (emf) induced in an electric circuit is proportional to the time rate of change of the magnetic flux linked with the circuit.

As a result of this effect, an inductor acts as an impedance to AC signals, and can be used to filter out certain frequencies or protect circuits from voltage spikes. It also helps to view an inductor as a crude form of gate or switch; when the current is turned off, the magnetic field associated with the inductor collapses almost instantly, quickly turning off the current flowing in the circuit.

The 4922R-38K is a versatile component that can be used in a variety of applications. With its small size, low losses, high frequency response, and excellent electrical and mechanical strength, it is an ideal choice for circuit designs that require inductance. As such, they are well suited for use in switched-mode power supplies, HF amplifiers, pulse transformers, and more.

The specific data is subject to PDF, and the above content is for reference