Electric power conversion systems – Current conversion – With voltage multiplication means
Reexamination Certificate
2008-06-03
2008-06-03
Laxton, Gary L (Department: 2838)
Electric power conversion systems
Current conversion
With voltage multiplication means
C307S110000, C327S536000
Reexamination Certificate
active
07382635
ABSTRACT:
A power supply apparatus includes an input terminal to be connected to a DC power supply, a DC-DC converter connected to the input terminal, a first capacitor, a second capacitor, an output terminal, a first switch connected between an output port of the DC-DC converter to charge the first capacitor, a second switch connected between the first capacitor and the output terminal to discharge the first capacitor, a third switch connected between the output port of the DC-DC converter and the second capacitor to charge the second capacitor, a fourth switch connected between the second capacitor and the output terminal to discharge the second capacitor, and a switch controller. The switch controller is operable to charge the first capacitor and the second capacitor alternately charged, discharge the first capacitor and the second capacitor alternately, and prevent the output port of the DC-DC converter from being connected to the first output terminal. This power supply apparatus has a small power consumption, and does not generate noises.
REFERENCES:
patent: 6411531 (2002-06-01), Nork et al.
patent: 6738272 (2004-05-01), Yamanaka et al.
patent: 2002-291172 (2002-10-01), None
Chinese Office Action issued Sep. 14, 2007 in Chinese application 200610151834.8 which is a foreign counterpart to the present application (with English translation).
“The construction and Operation of Voltage Regulation in Charge Pumps”, published 2002 and English translation.
Laxton Gary L
Matsushita Electric - Industrial Co., Ltd.
Wenderoth , Lind & Ponack, L.L.P.
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