P160-184JS

Nowadays, many electronic appliances, especially those such as car audio systems, medical equipment, and electrical power plants that require the most demanding type of inductor are designed using fixed inductors. In the design of such inductors, it is necessary to consider the working principles of the components, which remain unchanged regardless of the application field.

A fixed inductor is composed of a coil of wire, usually an iron core, and a terminal that connects the coil to the circuit. The coil is wound around an iron core and the turns are connected to the terminal. When current flows through the coil, an inductive reactance results from the magnetic field that the winding of the coil creates. The inductive reactance is measured in ohms, and the magnetic field reinforced by the core gives the inductor an increased inductive reactance, as desired.

The core of the inductor is mainly responsible for its inductance. This is the amount of current that the inductor can withstand without causing a voltage drop. Generally, higher inductance means higher impedance, meaning that more current is required to power the inductor. The iron core also affects the frequency response of the inductor. The higher the number of windings, the higher the frequency. Higher frequencies result in a higher impedance output from the inductor.

Another working principle of the fixed inductor is the self-resonance. This is the frequency at which the impedance peaks. As the frequency increases, the inductance decreases. The self-resonant frequency of the inductor must be carefully designed so that the different components in the circuit do not have to work against each other. The self-resonant frequency is determined mostly by the iron core material and the number of windings.

One of the most important characteristics of the fixed inductor is its Q-factor, also known as its quality factor. The Q-factor represents how effectively the inductor can transfer energy from one source to another. Generally, the higher the Q-factor, the higher the efficiency. The Q-factor also affects the frequency response of the inductor. The higher the Q-factor, the narrower the frequency range in which the inductor can effectively operate.

Fixed inductors are used in a wide range of applications, including medical equipment, audio equipment, wireless communications, circuit boards, and power supplies. They are also used in power electronics, automotive systems, and some consumer electronic devices. Fixed inductors are chosen for their stability, efficiency, and ability to produce very high voltage or current levels without generating unwanted electrostatic or electromagnetic interference.