Electric power conversion systems – Current conversion – Including d.c.-a.c.-d.c. converter
Reexamination Certificate
2007-01-09
2007-01-09
Vu, Bao Q. (Department: 2838)
Electric power conversion systems
Current conversion
Including d.c.-a.c.-d.c. converter
C363S021150, C363S021160, C363S021180
Reexamination Certificate
active
11078672
ABSTRACT:
A DC-DC converter is provided which comprises an inductance element10having a plurality of in-phase windings NB, NAwound around a common magnetic core and connected to a load5; a normal power source16for generating a reference voltage; a comparator18for comparing a voltage produced across winding NAwith reference voltage VRof normal power souce16to produce an error signal. As a same electric current IOflows through the windings NB, NAof inductance element10in the opposite directions to each other to produce in magnetic core of inductance element10opposed magnetic fluxes which countervail each other and any kind of noise such as ripple and spike noises causing voltage fluctuation.
REFERENCES:
patent: 6466463 (2002-10-01), Morita
patent: 6515876 (2003-02-01), Koike et al.
patent: 6519165 (2003-02-01), Koike
patent: 6525947 (2003-02-01), Umetsu et al.
patent: 6590790 (2003-07-01), Hosotani et al.
patent: 6597589 (2003-07-01), Wang
Bachman & LaPointe P.C.
Sanken Electric Co. Ltd.
Vu Bao Q.
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