Patent ID: 7554423
Filing Date: 2009-06-30
Classification: H01F,H03H

Abstract:
1. An inductor device having substantial cancellation of turn-to-turn and turn-to core parasitic capacitance and closely approximate cancellation of winding-to-winding parasitic capacitance of an inductor comprising: an inductor having split windings, said split windings of said inductor each having a turn-to-turn and turn-to-core parasitic capacitance and said split windings having a winding-to-winding parasitic capacitance, and capacitors connected to terminals of said split windings to couple currents passed by said turn-to-turn, turn-to-core and/or winding-to-winding parasitic capacitance of one split winding of said split windings to another of said split windings or an inductor in a ground return path or to compensate for parasitic capacitance which does so.