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What are the commonly used inductive coils
Single-layer coils are made of insulated wires wound one by one around a paper tube or a plastic wood skeleton. Such as transistor radio medium wave antenna coil.
Release time:
2022-08-22 10:20
Commonly used coils
1、Single layer coil
Single-layer coils are made of insulated wires wound one by one around a paper tube or a plastic wood skeleton. Such as transistor radio medium wave antenna coil.
2、Beehive type coil
If the winding coil, its plane is not parallel to the rotating surface, but intersected at a certain angle, this coil is called the honeycomb coil. And its rotation week, the number of times the wire bends back and forth, often called the number of folding points. The advantages of the honeycomb winding method are small size, small distributed capacitance, and large inductance. Honeycomb winding are utilized to wind the coil, the more folding points, the smaller the distribution capacitance.
3、Ferrite Core and Iron Powder Core Coils
The inductance of a coil is related to the presence or absence of a magnetic core. Inserting a ferrite core into an empty core coil increases the inductance and improves the quality factor of the coil.
4、Copper Core Coils
Copper core coils are more widely used in the ultra-short wave range, utilizing the position of the rotating copper core in the coil to change the inductance, this adjustment is more convenient and durable.
5、Color coded inductors
Color-coded inductors are inductors with a fixed inductance, and their inductance is marked by a color ring like resistors.
6、Resistance coil (choke)
Restriction of alternating current through the coil called choke, high-frequency choke and low-frequency choke.
7、Deflection coil
Deflection coil is the output stage of the television scanning circuit load, deflection coil requirements: high deflection sensitivity, magnetic field uniformity, high Q value, small size, low price.
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