Switching power supply device

Details Switching power supply device Switching power supply device

2005-12-06

2005-12-06

Patel, Rajnikant B. (Department: 2838)

Inductor devices

Winding formed of plural coils

C336S232000, C363S098000

Reexamination Certificate

active

06972656

ABSTRACT:
A switching power supply device of the present invention comprises a transformer having at least a first primary coil, a first secondary coil, a second secondary coil, a second primary coil, and laminated in the sequence of the first primary coil, the first secondary coil, the second secondary coil, the second primary coil, and having a configuration wherein a center tap is drawn out from a connecting part between one end of said first secondary coil and one end of said second secondary coil; a switching part for alternately applying a voltage in a forward direction and an inverse direction to said transformer; a rectifying part for rectifying the voltage induced across the center tap of the transformer and the other end of the first secondary coil or the other end of the second secondary coil; a smoothing part for smoothing the voltage of the rectifying part; and a control part for controlling the on-off of the switching part so that the output voltage becomes stable.

REFERENCES:
patent: 4873757 (1989-10-01), Williams
patent: 06302443 (1994-10-01), None

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