Electrical power converter with step-gapped transformer

Details Electrical power converter with step-gapped transformer Electrical power converter with step-gapped transformer

1994-01-31

1996-04-09

Wong, Peter S.

Electric power conversion systems

Current conversion

Including d.c.-a.c.-d.c. converter

336178, H02M 3335

Patent

active

055067646

ABSTRACT:
An improved electrical power converter is disclosed. The electrical power converter utilizes a step-gapped power transformer having a ferromagnetic core, a primary winding, and one or more secondary windings. The ferromagnetic core is step-gapped such that it has a continuous portion and a gapped portion. A power switch, preferably a MOSFET, alternately couples an input voltage across the primary winding of the transformer, inducing voltage pulses across the secondary windings that are filtered to produce one or more output voltages. The gate terminal of the MOSFET is preferably driven by the voltage induced across a tertiary winding of the transformer.

REFERENCES:
patent: Re34462 (1993-11-01), Whittle
patent: 4063307 (1977-12-01), Stephens
patent: 4130862 (1978-12-01), Holt
patent: 4282567 (1981-08-01), Voigt
patent: 4326244 (1982-04-01), Josephson
patent: 4695936 (1987-09-01), Whittle
patent: 4887199 (1989-12-01), Whittle
patent: 5155676 (1992-10-01), Spreen
patent: 5267133 (1993-11-01), Motomura et al.

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