Common Inductance Coil

Release time: 2023-07-20

3.1 single-layer coil

single-layer coil is wound on a paper tube or bakelite skeleton with insulated wires one by one. Such as transistor radio medium wave antenna coil.

3.2 honeycomb coil

If the coil is wound, its plane is not parallel to the rotation plane, but intersects at a certain angle, this coil is called honeycomb coil. And its rotation, the number of times the wire bends back and forth, often called the fold number. The advantages of the honeycomb winding method are small size, small distributed capacitance and large inductance. Honeycomb coils are all wound by honeycomb winding machine. The more folding points, the smaller the distributed capacitance. The inductance of

3.3 ferrite core and iron powder core coil

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

3.4 copper core coil

copper core coil is widely used in the ultrashort wave range. The inductance is changed by rotating the position of the copper core in the coil. This adjustment is more convenient and durable.

3.5 color code inductance coil

is a high-frequency inductance coil, which is made of epoxy resin or plastic after winding some enameled wire on the magnetic core. Its working frequency is 10KHz to 200MHz, and the inductance is generally between 0.1uH and 3300uH. The color code inductor is an inductor with a fixed inductance, and its inductance is marked with a color ring in the same way as the resistance. The unit is uH.

3.6 choke coil (choke coil)

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

3.7 deflection coil

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, small size and low price.