Patent ID: 6212081
Filing Date: 2001-04-03
Classification: H02J

Abstract:
An uninterruptible duplexed power supply system, which is constituted by connecting to the primary winding of a high-frequency transformer a AC power circuit comprising a rectifying circuit, which rectifies the AC from a commercial AC power supply, and a first switching device provided on the output side of this rectifying circuit; and connecting to a secondary winding of said high-frequency transformer a secondary DC outputting circuit, which supplies electric power to a load; and connecting to a tertiary winding of said high-frequency transformer a DC power circuit, comprising a second switching device for either synchronizing with said AC power circuit, or for operating said DC power circuit in accordance with the operating status of the AC power circuit, this uninterruptible duplexed power supply system being constituted so that at least the AC power circuit is unitized, and the AC power circuit is detachable in a connected state, in which the AC power circuit is electrically connected to the primary winding of said high-frequency transformer, and in a connection release state, wherein this connected state is released; and in constituted so as to provide means for either buffering or preventing an overcurrent reverse current resulting from induced voltage from said DC power circuit via said high-frequency transformer to said power circuit, and so that said power circuit unit is detachable in an energized state.