Three common inductor feature

1.The inductance of the multilayer coil

Single layer coil is small, and the single-layer coil can not be satisfied when the large value of inductance is to be obtained. Therefore, when the inductance is greater than 300H, multi-layer coil should be used.

Besides the capacitor between the coil and the loop, the multilayer coil also has capacitor between the layers, so the distribution capacitance of the multilayer coil is greatly increased. At the same time, the voltage between the coil layer and the layer is quite different. When the insulation between the layers is poor, it is easy to cause flashover and insulation breakdown. For this reason, multi-layer coils are often segmented, and the distance between them is large, thus reducing the distribution of coils.

2.Beehive coils

The coil made by honeycomb method can reduce the inherent capacitance of the coil. The so-called beehive dispel is to take a certain deflection angle of the wire around it (19°~260°) twine on the skeleton. Usually the winding process is carried out by automatic or semi-automatic beehive winding machine. For a medium coil with large inductance, two or three or more honeycomb coils can be used to segment them.

3. Ferrite core and core coil

The inductance of ferrite core and core coil is related to whether or not the core has a core. Inserting ferrite core into the hollow coil can increase the inductance and improve the quality of the coil. The volume of the coil can be reduced, the loss and the distribution capacitance can be reduced after adding the core. In addition, the position of the magnetic core in the online coil can be adjusted, and the inductance can be changed. As a result, many coils are equipped with cores and various shapes.

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