Patent ID: 7072192
Filing Date: 2006-07-04
Classification: H02M,Y10S

Abstract:
1. A power circuit for an electronic machine comprising; a first step-up circuit that has a step-up transformer and a current controller, said current controller controlling an amount of current supplied to a primary side of said step-up transformer according to an amount of voltage at a secondary side of said step-up transformer, so that a voltage applied to said primary side of said step-up transformer by a D.C. power source is stepped up to a first voltage; a second step-up circuit that steps voltage applied by said D.C. power source up to a second voltage being smaller than said first voltage; and a voltage applier that applies said second voltage to said secondary side of said step-up transformer; wherein, said current controller controls the amount of current supplied to said primary side of said step-up transformer according to said second voltage when said first step-up circuit starts, so that rush current caused by starting said first step-up circuit is restrained.