744313180 Inductors, Coils, Chokes

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Fixed inductors are electronic components used in electronic circuits. They are typically made up of a coil of wire, usually copper or other conductive material, surrounded by a core material. The coil may be wound around an iron or other magnetic material and are generally used for storing electrical energy or creating a small magnetic field.

The primary application of fixed inductors are in frequency-selective filters, which are used in audio circuits and tuning filters in radio receivers. They are also used in switched-mode power supplies, for matching the source impedance to the load. Fixed inductors are also used in resonant circuits, like those used in radio receivers, to select desired frequencies from noise and interference.

Some inductors are designed for high-frequency applications, such as radio filters, or for low-frequency applications, such as electromagnetic relays. Some of these can be used for RF power amplifiers, filters, or for high-frequency switching applications. They can also be used to regulate the current in small-signal applications, such as amplifiers or switches.

The working principle of fixed inductors is based on the effects of magnetic induction. When a coil of wire or other conductive material is surrounded by a core material, such as iron, it creates a magnetic field. This field induces a current in the coil when there is a flow of an alternating current. The magnitude of the current induced can be altered by changing the core material, the number of turns in the coil, and the resistance of the coil.

The DC resistance of a fixed inductor is important when designing circuit schematics. Higher DC resistance increases power dissipation and can lead to overheating and device failure. The values can vary from one type of inductor to another, so it\'s important to refer to the device’s datasheet for the required parameters.

Fixed inductors can be used in a variety of circuits, from receiver filters to switched-mode power supply converters. Depending on the intended use, size, material, and inductance values can all be critical considerations when making a selection.

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