Electricity: power supply or regulation systems – In shunt with source or load – Using a three or more terminal semiconductive device
Reexamination Certificate
2006-11-21
2006-11-21
Han, Jessica (Department: 2838)
Electricity: power supply or regulation systems
In shunt with source or load
Using a three or more terminal semiconductive device
C323S233000, C323S261000, C323S293000
Reexamination Certificate
active
07138787
ABSTRACT:
A DC/DC converter according to the present invention includes first and second transformers, each including a primary winding and a secondary winding, the primary winding including first and second windings, a first diode connected to both ends of a series circuit including the DC power supply, a first switch, and the first winding of the first transformer, a second diode connected to both ends of a series circuit including the DC power supply, a second switch, and the first winding of the second transformer, a first series circuit connected to both ends of the first diode, the first series circuit including the second winding of the first transformer and a smoothing capacitor, a second series circuit connected to both ends of the second diode, the second series circuit including the second winding of the second transformer and the smoothing capacitor, a reactor connected to both ends of a series circuit including the secondary winding of the first transformer and the secondary winding of the second transformer, and a control circuit which turns on and off the first and second switches with a phase difference of half a cycle.
REFERENCES:
patent: 5418709 (1995-05-01), Lukemire
patent: 6191965 (2001-02-01), Matsumoto
patent: 2005/0047175 (2005-03-01), Kawasaki et al.
patent: 2000-308337 (2000-11-01), None
U.S. Appl. No. 11/350,823, filed Feb. 10, 2006, Tsuruya.
Han Jessica
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Sanken Electric Co. Ltd.
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