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Introduction to several common inductors

Inductor coils are electronic components that operate on the principle of electromagnetic induction. They have the characteristics of high frequency and high frequency resistance. Almost all electronic devices use inductor coils. The following small series will introduce you to the 7 most common inductors.
Inductor coil
1. Single-layer coil, single-layer coil is wound around the paper tube or bakelite skeleton in a circle with insulated wires. Such as a transistor radio wave antenna coil.
2. The honeycomb coil, if the coil is wound, its plane is not parallel to the rotating surface, but intersects at a certain angle. This coil is called a honeycomb coil. And the number of times the wire is bent back and forth, often referred to as the number of vertices. The advantage of the honeycomb type winding method is that the volume is small, the distributed capacitance is small, and the inductance is large. The honeycomb coils are wound by the honeycomb winding machine. The more the folding points, the smaller the distributed capacitance.
3. The ferrite core and the iron powder core coil, the inductance of the coil is related to the presence or absence of the magnetic core. Inserting a ferrite core into the air core coil increases the inductance and improves the quality of the coil.
4, magnetic core coil, magnetic core coil in the ultra-short wave range is applied more, using the position of the rotating magnetic core in the coil to change the inductance, this adjustment is more convenient and durable.
5, color code inductor coil, is a high-frequency inductor coil, it is wrapped around some core wire on the core and then encapsulated with epoxy or plastic. Its operating frequency is 10KHz to 200MHz, and the inductance is generally between 0.1uH and 3300uH. A color code inductor is an inductor with a fixed inductance, and its inductance sign method is marked with a color ring like a resistor. Its unit is uH.
6. Choke coil (choke), the coil that restricts the passage of AC power is called the choke coil, and the high-frequency choke coil and the low-frequency choke coil.
Chip inductor
7. The deflection yoke and the deflection yoke are the loads of the output stage of the TV scanning circuit. The deflection yoke requires: high deflection sensitivity, uniform magnetic field, high Q value, small size and low price.

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