公开(公告)号：EP1078378A1

公开(公告)日：2001-02-28

申请号：EP99924153.2

申请日：1999-05-07

申请人： NMB (USA), Inc.

发明人： JANSEN, Arianm

IPC分类号： H01F17/00 ,  G05F1/14 ,  H02M3/335

CPC分类号： H02M7/066

摘要： A power regulator (30) is provided which employs a resonant circuit (32) and permits regulation between a certain maximum value and zero. A series resonant circuit is adjusted to regulate power by adjusting the correspondence between the resonance frequency and the frequency of the voltage source (31) such as an AC source delivering a sine wave or a square wave. Further, the output voltage is regulated to be lower than the AC source (31) when output current is zero. A capacitance (C2) is connected in parallel with the output of the power regulator (30) to form a second resonant circuit with the inductance (L1) of the series resonant circuit (32). A method of power regulation is also contemplated.