Hollow coil refers to the air as the medium of coil. The design calculation method of single coil coil and multilayer hollow coil coil.

The calculation of 1 single line graph

As shown in Figure 5-15 single coil structure. Can be calculated by singlecoil inductance:

2 Calculation of multilayer line graph

Calculation and multilayer coil coil inductance winding method has nothing to do, so honeycomb coil can also be calculated:

3 Calculation of distributed capacitance

Coil the distributed capacitance and coil winding of types and sizes and other factors related, it is difficult to calculate, introduce the distributed capacitance of single-layer coil calculation method.

Circle the number of N single coil capacitor and the coil is independent of the distribution, the calculation formula is as follows:

The distributed capacitance of multilayer coil than single coil capacitancedistribution is much larger. The maximum can reach hundreds of skin. To reduce the distributed capacitance, fine wire diameter should be used for winding. And as far as possible to reduce the size of the skeleton.

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