![]() To do this, the relative magnetic permeability of ferrite is presented as a complex value: Since the magnetic permeability of ferrite and its losses essentially depend on the frequency, this occasion must be taken into account when calculating the inductance of such coils at radio frequencies. At the same time, with appearance of new high-frequency ferrites, radio amateurs are increasingly using ferrite toroid cores to make the LC resonant filters. The use of ferrite cores can significantly reduce the dimensions of the inductive elements. Inductance, Q-factor and self-capacitance of a ferrite toroid coil at radio frequencies Multilayer air core inductor on a rectangular form.Self-capacitance of single-layer inductor.Features of calculation of power supply chokes.
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