PM20-120K

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Fixed inductors, powered by AC power and DC power, are electro-magnetic devices used in various circuits. The PM20-120K is a fixed inductor that can be used in a variety of applications. This article will explain its application field and working principle.

The PM20-120K is a samarium cobalt permanent magnet with a maximum magnetic permeability of 500 H/m. It is a fixed inductor with a continuous operating temperature range of -40 to +105 °C and a maximum total storage temperature of 275°C. It features low DC resistance and high inductance, with an operating current range of 5-20mA. The PM20-120K is suitable for use in pulse and SMPS applications, providing constant current and power over a wide range of inductance values.

In general, the PM20-120K can be used in applications involving AC or DC power, and is particularly useful in power supplies, motor control, inverter systems, and lighting circuits. The PM20-120K is also suitable for use in low-power and high-current circuits, such as battery chargers, converters, power rectifiers, and voltage regulators.

In addition to its wide application field, the PM20-120K stands out thanks to its high performance and reliability. Its working principle is based on Faraday’s law of induction, which states that a changing magnetic field within an inductor produces an electric current. The PM20-120K produces an electromotive force, or EMF, as a by-product of this induction, which is used to generate a current.

The PM20-120K is constructed with a cylindrical core of soft magnetic material wrapped in thin wire. When powered, the magnetic field produced by the PM20-120K produces an opposing EMF, which increases in strength as the current increases. This EMF, in turn, produces an opposing current, which creates a resistive force against the applied current. This force limits the operating current of the PM20-120K and ensures its efficient operation.

Overall, the PM20-120K is a versatile, reliable, and efficient fixed inductor with a wide range of applications. It works on the principle of Faraday’s law of induction to produce an opposing EMF, which produces a resistive force against the applied current, limiting its operating current. The PM20-120K is suitable for use in AC and DC power supplies, motor control, inverter systems, low-power and high-current circuits, and many more.

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