Special electromagnetic coil 0210B for refrigeration valve

What is the main function of the inductance of the electromagnetic coil?

What is the main function of the inductance of the electromagnetic coil? The inductance of the coil, in fact, is that when a current passes through the wire, a magnetic field will be established around the coil.

Most of the time, the coil will be wrapped in a cylindrical shape, the purpose of which is to enhance the internal magnetic field. It is composed of conductors (which can be bare wires or painted wires) around the insulating tube, and usually it has only one winding. Let's talk about its main function in detail.

First of all, choke:

in those low-frequency circuits, it can be used to block low-frequency alternating current. So that the pulsating DC circuit can be converted into a pure DC circuit, so it can realize the output of the rectifier circuit between two filter capacitors, and the choke coil and the capacitor can form a filter circuit. As for the high-frequency circuit, it can effectively prevent the high-frequency current from flowing to the low-frequency end.

Secondly, filtering:

the filtering function is similar to the above theory. Its main purpose is to effectively organize the rectified pulsating DC current to flow to a pure DC circuit composed of two electrolytic capacitors, so that the circuit can be simplified and the production cost can be reduced. Pure DC current can be obtained by charging and discharging the capacitor and turning on the DC current by strangling the electromagnetic coil, and the DC current can be smoothed effectively by preventing AC.

Third, shock:

rectification is to change AC into DC, and shock is to change DC into AC. The circuit that completes this process is called impact device. The waveform of impact device can be divided into ladder wave, square wave, positive rotating wave, sawtooth wave and so on. The range of frequency can be several hertz or tens of gigahertz.

What is the main function of the inductance of the electromagnetic coil? From the above introduction, we can know that it plays an important role in throttling, filtering and oscillation.