PM1812-R18K-RC

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Fixed Inductors

Fixed inductors are typically used in a wide variety of electronic circuits, such as filters and power supplies. They can also be used as output inductors for DC-to-DC converters, and as input protection elements in switching power supplies. In this section, we will discuss the application field and working principle of one such fixed inductor — the PM1812-R18K-RC.

Application Field

The PM1812-R18K-RC fixed inductor is specifically designed for DC-DC conversion and filtering applications. Its sturdy design and rugged construction make it reliable even in extreme weather conditions, making it a particularly good choice for harsh industrial and automotive environments. In addition to a wide range of standard inductance values, the PM1812-R18K-RC allows the user to customize the inductance values to meet specific design requirements.

In terms of its components, the inductor consists of a copper wire wound around a ferrite core, as well as an internal termination for convenience. The figure below shows an illustration of the PM1812-R18K-RC fixed inductor in its simplest form.

This type of inductor is especially suitable for noisy power supplies and power converters, such as the one required by microcontrollers. The excellent reliability of the PM1812-R18K-RC makes it a great choice for these applications.

Working Principle

Inductors are passive electrical components that use magnetic fields to store energy. A fixed inductor like the PM1812-R18K-RC consists of a coiled wire, typically made of copper, that is wound around a ferrite core. When an electric current passes through the inductor’s terminals, a magnetic field is created inside the coil. The strength of the magnetic field is proportional to the current flowing through the inductor and is largely determined by the inductance value of the component.

When the current flowing through the inductor changes, the induced magnetic field also changes. This, in turn, creates an induced voltage that works opposite to the current’s direction. This so-called “back-EMF” is what makes inductors useful in power conversion applications. By changing the current flowing through the inductor at the right moment, a circuit can be designed that is capable of extracting useful DC energy from AC input voltage.

In addition to its basic power conversion properties, inductors can also be used to filter out certain frequencies from an electrical signal. By carefully selecting the inductance value, it is possible to pass only frequencies with in a certain range, while all others are suppressed. This is especially useful in audio and radio applications.

Overall, the PM1812-R18K-RC fixed inductor is a robust and reliable component that offers excellent performance for its price. Its wide range of available inductance values makes it suitable for a variety of different applications, while its internal termination ensures easy installation and maintenance.

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