Classification of Magnetic Ring Inductance Coils

Magnetic ring inductance coil is one of the commonly used components in household appliances, instruments and other electronic products. It is an electronic component that uses the principle of electromagnetic induction to work. Magnetic ring inductance coils are opposite to capacitors in electrical characteristics, "passing low frequencies and blocking high frequencies". High-frequency signals will encounter great resistance when passing through the inductance coil, making it difficult to pass; while the resistance presented by low-frequency signals passing through it is relatively small, that is, low-frequency signals can pass through it easily. The resistance of the inductor to direct current is almost zero.

In electronic circuits, the inductance coil is mainly used to isolate and filter AC signals or form a resonant circuit with capacitors and resistors. There are many types of magnetic loop inductance coils with complete functions. Here to classify the structure of the magnetic loop inductance coil.

Ⅰ. Honeycomb coil:

If the plane of the coil being wound is not parallel to the rotating surface, but intersects at a certain angle, this kind of coil is called a honeycomb coil. The number of times the wire is bent back and forth after one rotation is often called the number of break points. The advantages of the honeycomb winding method are small size, small distributed capacitance, and large inductance. The honeycomb coils are all wound by the honeycomb winding machine, the more the turning points, the smaller the distributed capacitance.

Ⅱ. Copper core coil:

Copper core coils are widely used in the ultrashort wave range. The position of the copper core in the coil is used to change the inductance. This adjustment is more convenient and durable. 

Ⅲ.choke coil (choke coil):

The coil that restricts the passage of alternating current is called a choke coil, which is divided into a high-frequency choke coil and a low-frequency choke coil.

Ⅳ. single-layer coil:

Single-layer coils are wound around a paper tube or bakelite frame with insulated wires. Such as the medium wave antenna coil of a transistor radio.

Ⅴ. Deflection yoke:

The deflection coil is the load of the output stage of the TV scanning circuit. The deflection coil requires: high deflection sensitivity, uniform magnetic field, high Q value, and small size.

Ⅵ. Ferrite core and iron powder core coil:

The inductance of the coil is related to the presence or absence of a magnetic core. Inserting a ferrite core in the air-core coil can increase the inductance and improve the quality factor of the coil.

Ⅶ.color code inductor:

The color code inductor is an inductor with a fixed inductance, and its inductance marking method is the same as the resistance with a color ring.