What are the uses of magnetic ring inductor coils?

December 06, 2022

The uses of Magnetic Ring Inductor Coils can be divided into three categories: choke, filtering, and oscillation.

I. Choke

Magnetic ring inductor coil in low frequency circuit, is used to stop low frequency AC, pulsating DC to pure DC circuit, it is often used in the middle of two filter capacitors at the output of rectifier circuit, choke and capacitor form Π type filter circuit. In the high-frequency circuit: is to prevent the high-frequency current flow to the low-frequency end, the high-frequency choke in the old-fashioned radio is this role.

II, filtering.

The same role as the choke, but also to prevent the rectified pulsating DC current to the pure DC circuit. By the choke (to simplify the circuit, reduce costs, with a pure resistor instead of a choke) and two capacitors (electrolytic capacitors) to form a faction filter circuit. Using the capacitor charging and discharging effect and the choke through the DC, blocking the AC characteristics to complete the smooth DC and get the DC power.

III, oscillation

It is known that rectification is to turn AC into DC, then oscillation is the reverse process of turning DC into AC. The circuit that completes this process is called an "oscillator" in the industry. Oscillator waveform: positive spin wave, sawtooth wave, trapezoidal wave, square wave, rectangular wave, spike wave. Frequency from a few HZ - tens of GHZ, in the field of wired electricity, radio is very widely used.

I believe that I have read this article, all have a little impression of the magnetic ring inductor coil.

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Ms. Song

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