Electric power conversion systems – Current conversion – Including d.c.-a.c.-d.c. converter
Patent
1982-06-14
1984-06-19
Wong, Peter S.
Electric power conversion systems
Current conversion
Including d.c.-a.c.-d.c. converter
323267, H02M 3335
Patent
active
044555962
ABSTRACT:
A high-frequency, power converter circuit including a transformer for transforming electrical current and having a primary; at least one secondary winding of a first type, and at least one secondary winding of a second type. The secondary windings of said first and second types are in flux-coupling relationship with the primary. A source of electric current is operatively coupled to the primary to flow therethrough. An electronic switch is used for periodically interrupting the flow of current through the primary to provide "on" and "off" periods therefor. A flyback circuit is operatively associated with the secondary winding of the first type to provide a first output from the power converter circuit. A secondary circuit includes a first diode and an inductor being series connected with the secondary winding of the second type, the diode being positioned in the secondary circuit to enable the inductor to store energy from the transformer during an on period. The flyback circuit also has a diode positioned therein to enable current to flow to the first output during an off period; and a second diode is coupled to the junction between the first diode and the inductor to enable current to flow from the inductor to an output of the secondary circuit during an off period.
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patent: 4374355 (1983-02-01), Steigerwald et al.
M. Kohno and K. Kuwabara, "Single-Ended DC-DC Converter with Two Individually Controlled Outputs", Fujitsu Sci. & Tech. J. (Japan), vol. 16, No. 1 (Mar. 1980), pp. 23-37.
Contino, J. S., et al., "Flyback Switching Power Supplies with Individual Output Regulation", IBM Technical Disclosure Bulletin, vol. 22, No. 2, Jul. 1979, pp. 632-633.
Cavender J. T.
NCR Corporation
Sessler Jr. Albert L.
Wargo Elmer
Wong Peter S.
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