POWER COUPLING

摘要

A power coupling system includes a source unit (1) which is to be connected to a power supply. The source unit (1) includes a first winding (P). A load unit (2) includes a second winding (S). Power is inductively coupled from the first winding to the second winding. The source unit (1) and load unit (2) are readily separable. The second winding (S) is connected in a resonant circuit. An AC voltage applied to the first winding (P) is tuned to the resonant frequency of the load circuit including the secondary winding leakage inductance. The source unit may be tuned automatically to the resonant frequency and may include a phase-locked loop responsive to voltages and currents in the source and the load.