Switching power supply with smoothing circuitry for more...

Electric power conversion systems – Current conversion – Including d.c.-a.c.-d.c. converter

Reexamination Certificate

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C363S067000, C363S071000

Reexamination Certificate

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08081492

ABSTRACT:
The first choke coil and the third choke coil are not magnetically coupled to the second choke coil and the fourth choke coil. Therefore, even in a case where a structure for increasing the heat radiation area is adopted, a pair of the first and third choke coils and a pair of the second and fourth choke coils located between the two ends of the capacitor maintain a state of equilibrium so as to be inversely proportional to mutual loss without affecting one another, and the output therefore stabilizes. Accordingly, the output of the switching power supply, that is, the rectified and smoothed output across the two ends of the capacitor stabilizes.

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Office Action dated Apr. 20, 2011 issued in U.S. Appl. No. 12/234,274.

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