Power circuit restraining rush current

Details Power circuit restraining rush current Power circuit restraining rush current

2006-07-04

2006-07-04

Vu, Bao Q. (Department: 2838)

Electric power conversion systems

Current conversion

Including automatic or integral protection means

C363S097000, C323S908000

Reexamination Certificate

active

07072192

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

REFERENCES:
patent: 5274208 (1993-12-01), Noda
patent: 5377213 (1994-12-01), Honda
patent: 5508904 (1996-04-01), Hara
patent: 6272024 (2001-08-01), Uchida
patent: 6798175 (2004-09-01), Hanada et al.
patent: 6831447 (2004-12-01), Wittenberg
patent: 5-69964 (1993-09-01), None
patent: 10-56732 (1998-02-01), None
English Language Abstract of JP 10-56732.

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