5726

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Fixed inductors, often known as chokes, coils or reactors, are passive electronic components used in electronic circuits to store energy in the form of a magnetic field. These are widely used in a variety of applications, particularly power applications, in electronics, power engineering, and telecommunications. A simple definition of a fixed inductor is an electronic component composed of a conductor, generally a wire wound back on itself, that acts as a magnet when current is applied.

Inductors are usually classified in two categories: air-core inductors and ferrite-core inductors. Air-core inductors have no solid core material, as the conductor itself is used as the magnetic core, making the inductance dependent solely on the length and diameter of the conductor. Ferrite-core inductors, on the other hand, use a ferrite core material, which increases the inductance. Ferrite-core inductors are usually the type used in electronic circuits due to their higher inductance value.

The most common application of the fixed inductor is using it to filter input or output signals in electronic circuits. When a signal is applied to an inductor, the electric current builds up a magnetic field that acts as a barrier, thus reducing the current. This behavior is called "low pass filter" and it is generally used to attenuate high frequencies, thus preventing these signals from interfering with the operation of other components.

Fixed inductors can also be used in power applications. For example, they can be used as an impedance matching device in AC circuits. By adjusting the inductance of the inductor, the voltage and current on both sides of the device can be controlled, allowing for impedance matching between two circuits. They are also commonly used in power factor correction, as inductors can store energy and then discharge it when needed, thus improving the power factor of a system.

Inductors are also used to create oscillators and other types of signal generators. By varying the inductance of the inductor, the frequency of the generated signal can be adjusted, allowing for the creation of a range of frequencies. This makes inductors ideal for creating oscillators for radio transmitters and receivers.

In telecommunications, inductors are also used for signal transmission and reception. By using an inductor, telecommunication signals can be amplified, allowing for signals to be transmitted over longer distances. Inductors are also used in radio receivers to filter out the noise from other radio transmitters, allowing the receiver to focus on receiving signals from the transmitter.

In addition to these applications, fixed inductors are also used in various other electronic applications such as feedback control systems, protection circuits, subwoofer circuits, and dust suppression circuits. They are also used for switching power supplies, power line harmonic stabilizers, and power transformers.

The working principle of a fixed inductor is based on electromagnetic induction. When an electric current is applied to the inductor, a magnetic field is generated, which inducts a current in the opposite direction. This secondary current then provides a voltage drop across the inductor, which in turn creates a back-emf. This back-emf opposes the applied current and this opposition reduces the current flow. Thus, the inductor limits or “chokes” the current flow.

The specific data is subject to PDF, and the above content is for reference