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2020

High frequency transformer knowledge

Relationship among inductance, turns, wire diameter and air gap of high frequency transformer

1) According to the inductance calculation formula, Al = L / N2, the inductance is directly proportional to the square of turns, but independent of turns per volt of high frequency transformer. That is, the more turns, the more inductance. The smaller the number of turns, the smaller the inductance. The number of turns per volt of the transformer is related to the size and quality of the magnetic core, and the inductance per turn is also related to the size and quality of the magnetic core. The inductance per turn of the transformer with more turns per volt is small. If the customized manufacturer of the high-frequency transformer increases the number of turns of the winding when the magnetic core is unchanged, it can provide more inductance and more abundant electric energy.

2) The relationship between inductance and wire diameter is basically no big difference when the number of turns is small, but it is obvious when the number of turns is large. For example, I-type inductance, the closer the coil is to the central axis, the larger the inductance is because the magnetic lines are not easy to emit. For example, two inductors with the same number of turns are wound neatly and disorderly and orderly The reason is that the inductance must be large, the wire diameter must be thick and thin, and the inductance must be large, the axis must be thick and thin.

3) The air gap, wire diameter and inductance are inversely proportional 1. The deeper the air gap is, the smaller the inductance is under the same wire diameter and the same number of turns of the same winding. The deeper the air gap is, the lower the permeability is and the smaller the inductance is. 2. With the same number of turns and the same air gap depth, the smaller the wire diameter, the larger the inductance.