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Ring coil inductance introduction

The toroidal coil inductor (inductor coil) is an electromagnetic induction component wound with insulated wires and is one of the commonly used components in electronic circuits.

First, the product description
Soft magnetic induction is an electronic component that consists mainly of a toroidal core, a pair of iron powder, ferrite, a wire around it, or other material to make a speaker inductance. Longitudinal coils are used in a wide range of applications, such as high frequency coils and transformers. The soft magnetic inductor structure has higher magnetic flux and higher inductance than the same electromagnetic coil. This is largely due to the need to supply a closed base magnetic path for smaller turns. This magnetic flux is limited to the base at a high permeability, and the energy consumed by the confinement is reduced and can be absorbed into adjacent objects, so the toroidal coil supplies some cores. The base of the threaded ring in the direction of the geometric flux of the magnetic field, while the base of the soft magnetic flux parallel is the ring.

Second, the role

Ring inductors have the following effects:

1. Filtering in the AC circuit;

2. Can also play a role in vibration;

3. The DC circuit can play the role of frequency conversion;

4. Can also play a role of coupling.

Third, the characteristics

The working frequency band has small impedance and the annoyance frequency impedance is large;

The inductance value is stable and the thermal stability is good;

A variety of structural methods and impedance characteristics are available for selection.

Fourth, use

Switching power supply noise suppression filter;

Power line and signal line static noise filter;

Radiation annoyance suppressors such as inverters and ultrasound equipment.

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