Step-up circuit and step-up circuit device

Details Step-up circuit and step-up circuit device Step-up circuit and step-up circuit device

2011-04-26

2011-04-26

Berhane, Adolf (Department: 2838)

Electricity: power supply or regulation systems

Output level responsive

Using a three or more terminal semiconductive device as the...

Reexamination Certificate

active

07932710

ABSTRACT:
A step-up circuit comprises a rectifier element11provided on a current path from a terminal VCC applied with a voltage source voltage VCC to a terminal VP connected to one electrode of a capacitor C1such that a direction from the terminal VCC toward the terminal VP is a forward direction, a rectifier element12provided on a portion of the current path which is between the rectifier element11and the terminal VP such that a direction from the rectifier element11toward the terminal VP is a forward direction, a terminal BC1which is connected to one electrode of a capacitor C2and is applied with an oscillating voltage, a terminal BC2which is connected to a portion of the current path which is between the rectifier element11and the rectifier element12and is connected to the other electrode of the capacitor C2, and a switching element14provided on a portion of the current path which is between a connection point, where the terminal BC2is connected to the current path, and the terminal VCC, and the switching element14is configured to be turned ON and OFF according to the voltage at the terminal VP with respect to the voltage at the terminal BC2.

REFERENCES:
patent: 5612610 (1997-03-01), Borghi et al.
patent: 7432757 (2008-10-01), Kimura
patent: 2007/0257652 (2007-11-01), Yanagishima
patent: 2009/0179584 (2009-07-01), Miyanaga
patent: 2007-300760 (2007-11-01), None
patent: 2008-054469 (2008-03-01), None

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