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Fixed inductors are key components in numerous electronic circuits, from simple radio receivers to complex computers. As their name suggests, fixed inductors are a type of inductor with a fixed shape and/or size that is unable to be adjusted or changed. This makes them ideal for providing stability and reliability in circuits. Fixed inductors are classified into two main categories—linear inductors and non-linear inductors—based on their behavior in different circuits.

In terms of applications, fixed inductors are used in a wide range of electronic circuits and systems. They are commonly used in radio communications applications, including antenna matching, amplifier matching, and filter networks. Fixed inductors are also used in audio systems such as car stereos and home entertainment systems. Other applications of fixed inductors include power supplies, DC-DC converters, and switch-mode power supplies (SMPS). In short, fixed inductors are widely used in an array of applications to provide stability, reliability, and radio frequency control.

The working principle of a fixed inductor is fairly straightforward. Essentially, a fixed inductor is an electronic component with an inductance, which is a measure of its ability to store electrical energy in the form of a magnetic field. When an AC or DC current is applied to the inductor, it stores energy in the form of this electromagnetic field. When the current is removed, the stored energy is released back into the circuit. The inductance, measured in Henrys (H), can be adjusted by changing the number of turns on the inductor, as well as by changing its physical size.

Fixed inductors are commonly constructed with wire that has been coiled in the shape of a spring, known as a “coil”. This coil is then wound around a core, usually composed of either an iron or a ferrite material. Changing the shape and number of coils, as well as the type of core material, allows the fixed inductor to be adjusted to achieve the desired inductance.

In addition to the various applications of fixed inductors, they are also used in power transfer systems such as those found in electric trains. In these systems, the inductors are used to transfer energy to the train’s motors in a highly efficient manner. Furthermore, fixed inductors are used in the filtering process of certain types of radio waves, such as those found in GPS and remote sensing systems.

Overall, fixed inductors are widely used in numerous electronic circuits and systems. From radio communications to power transfer systems, fixed inductors are invaluable components that provide the desired level of efficiency and reliability. As such, they are a key piece of technology in the modern world.

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