Electricity: electrical systems and devices – Electrostatic capacitors – Fixed capacitor
Reexamination Certificate
2007-06-26
2007-06-26
Ha, Nguyen T. (Department: 2831)
Electricity: electrical systems and devices
Electrostatic capacitors
Fixed capacitor
C361S306100, C361S306200, C324S428000, C324S433000, C356S145000, C356S149000
Reexamination Certificate
active
10983088
ABSTRACT:
A capacitor charging semiconductor apparatus including a plurality of serially connected capacitors to be charged. A direct current source is applied to the plurality of capacitors. A plurality of bypass transistors is provided to bypass charge current supplied to the plurality of capacitors when a voltage of a capacitor exceeds a prescribed reference level. A plurality of parallel monitor circuits is provided to control the plurality of bypass transistors to equally charge the plurality of capacitors. A plurality of capacitor connection terminals is connected to both ends and intersections of the plurality of capacitors. A plurality of transistor connection terminals is connected to the plurality of control terminals of the bypass transistor. A prescribed number of capacitors is optionally charged by increasingly shorting a number of capacitor connection terminals from the highest and lower voltage side capacitor connection terminals.
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Fujiwara Akihiko
Yano Koichi
Dickstein & Shapiro LLP
Ha Nguyen T.
Ricoh & Company, Ltd.
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