4922-12L

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Fixed inductors, also known as inductor coils, are electronic components used in various circuit designs. The 4922-12L is an example of a fixed inductor, and this article will discuss its possible applications and operational principles.

Inductor coils such as the 4922-12L are designed to store energy in the form of an electromagnetic field. When current passes through the coil, the magnetic field changes periodically and stores energy. This can be used to create a number of electrical applications, such as filtering out certain signals or creating low-impedance chokes for power supplies.

In the case of the 4922-12L, it is designed for use in high-frequency filter applications. Specifically, it is intended to be used in the range of 6-364 MHz, and is designed to operate at a maximum current of 1.5A. It is also designed to reproduce a very low inductance value, with a rated inductance of 0.12 μH.

The operational principle of the 4922-12L is relatively simple. In order to reproduce a low inductance value, the core consists of many thin sheets of ferrite that are wound together on a plastic former. This increases the number of turns in the winding, and thus reduces the inductance. The core also features a laminated construction, allowing it to more closely couple the field and reduce the magnetic losses.

In terms of electrical characteristics, the 4922-12L has a low self-resonant frequency of 412 MHz. Additionally, the DC resistance of the winding is also low, typically 1.1 Ω. This makes it suitable for use in high-frequency filter circuits.

Due to its high frequency and low inductance characteristics, the 4922-12L is often used in a range of applications, including RF power amplifiers, low-noise amplifiers, and pulse amplifiers. In addition, it can also be used to construct a high-frequency ferrite filter for various signal processing applications. It is also popularly used in antennas for wireless communication systems.

In summary, the 4922-12L is a useful fixed inductor for high-frequency filter applications. Its laminate construction and low self-resonant frequency make it an ideal choice for use in a wide range of electronics, such as RF power amplifiers and noise filters. Moreover, it is also suitable for constructing ferrite filters for signal processing.

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