Electric power conversion systems – Current conversion – Having plural converters for single conversion
Patent
1995-12-21
1997-09-30
Wong, Peter S.
Electric power conversion systems
Current conversion
Having plural converters for single conversion
323268, H02M 700
Patent
active
056731876
ABSTRACT:
A first power source for providing a positive voltage and a second power source for providing a negative voltage are selectively activated to supply a positive or a negative voltage to a load. A rectifying element is connected between the first and second power sources to prevent electric current from flowing through the second power source when only the first power source is active. A switch and a resistor for generating a feedback current are connected in series with an output terminal of the first power source and a terminal of the load. The switch is opened to prevent current flow through the resistor when only the second power supply is active.
REFERENCES:
patent: 4761702 (1988-08-01), Pinard
patent: 5262933 (1993-11-01), Shyi-Hon
Nakaya Masahide
Tokunaga Atsuo
Patel Rajnikant B.
Ricoh & Company, Ltd.
Wong Peter S.
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