Electric power conversion systems – Current conversion – Including d.c.-a.c.-d.c. converter
Patent
1998-03-11
1999-11-23
Riley, Shawn
Electric power conversion systems
Current conversion
Including d.c.-a.c.-d.c. converter
363127, 363131, 363 89, H02M 3335
Patent
active
059911670
ABSTRACT:
A DC to DC power converter which can suitably be used, for example, in a charger device for rechargeable batteries has an input and a load output, a resonant transformer provided with a transformer input and a transducer output coupled to the load output, an output rectifier circuit coupled to the load output, a controllable transformer control circuit, in the form of a pulse providing circuit, coupled between the input of the converter and the transformer input, and a synchronous output rectifier circuit coupled between the transformer output and the load output. The transformer control circuit receives a control signal derived from a signal constituting or proportional a signal at the transformer output. The output rectifier circuit shows a variety of possible embodiments, each embodiment including at least two transistor switches which are connected between a different end of the transformer output and a same end of the load output.
REFERENCES:
patent: 4814962 (1989-03-01), Magalhaes
patent: 5159541 (1992-10-01), Jain
patent: 5438497 (1995-08-01), Jain
Riley Shawn
Slobod Jack D.
U.S. Philips Corporation
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