0925R-152J

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Fixed Inductors

A fixed inductor (ICO or 0925R-152J) is an electronic component that stores energy in its electric field. It has low inductance and is mainly used for high and very low frequencies. It is a type of passive component consisting of a wire wound around a core of ferrite or metal.

The fixed inductor is also used for high current applications. It is mainly used to build coupling networks such as band-pass and low-pass filters, motor and generator windings, interface circuits, and power conversion circuits. A fixed inductor’s inductance relates to the number of turns in the coil, the diameter of the coil, and the core material used.

Application Field and Working Principle

The most common uses of fixed inductors include: radio frequency circuits, power supply filters, and DC-DC converters. Fixed inductors are often found in DC-to-DC conversion circuits, such as voltage regulators, AC-to-DC voltage converters, and DC-to-AC current converters. They are also used in automotive, telecom, industrial and aerospace applications.

The working principle mainly relies on Faraday’s law of induction. When a current passes through the inductor, a magnetic field is created around the coil, and the inductor resists the change in current. This resistance is known as inductance. As a result, the current flowing through the fixed inductor is limited. In addition, the inductor stores energy in its electric field, which can later be used in other circuits for various applications.

Fixed inductors are also used to increase the inductance of an existing circuit, allowing the circuit to operate with higher frequencies. They are also used to reduce electromagnetic interference, increase power transfer efficiency, and maintain a stable frequency range.

In summary, fixed inductors are essential components in a variety of circuits ranging from consumer electronics to automotive and aerospace applications. They provide reliable and efficient inductance, allowing current to be limited and new frequencies to be reached.

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