Electric power conversion systems – Current conversion – Including d.c.-a.c.-d.c. converter
Reexamination Certificate
2007-11-20
2007-11-20
Vu, Bao Q. (Department: 2838)
Electric power conversion systems
Current conversion
Including d.c.-a.c.-d.c. converter
C363S098000, C363S134000
Reexamination Certificate
active
10534142
ABSTRACT:
A switching power supply circuit includes a plurality of switching converters, each including a partial resonance voltage circuit combined with a current resonance type switching converter using a half-bridge connection system. For changeover control, a rectification circuit serves as a voltage doubler rectification circuit at an AC voltage less than or equal to 150V, but serves as a full-wave rectification circuit at an AC voltage greater than or equal to 150V. The voltage output of the converters is fed back to a rectification current path by a power factor improving transformer, the rectification current being interrupted by means of a rectification diode to expand the conduction angle of the AC input current. A DC switch circuit in the rectification current path is switched between on and off conditions in response to the input of a predetermined starting signal to control the starting order of the secondary side DC output voltage.
REFERENCES:
patent: 5274543 (1993-12-01), Loftus, Jr.
patent: 5345374 (1994-09-01), Sato et al.
patent: 6144445 (2000-11-01), Nilssen
patent: 6274987 (2001-08-01), Burke
patent: 6288378 (2001-09-01), Patridge et al.
patent: 6316883 (2001-11-01), Cho et al.
patent: 6674654 (2004-01-01), Winick et al.
patent: 6703794 (2004-03-01), Chen
patent: 6856095 (2005-02-01), Zeng et al.
patent: 7209373 (2007-04-01), Oicles et al.
Lerner David Littenberg Krumholz & Mentlik LLP
Sony Corporation
Vu Bao Q.
LandOfFree
Switching power supply circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Switching power supply circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Switching power supply circuit will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3861707