The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 27, 2010
Filed:
May. 10, 2007
Michio Okamura, Kanagawa, JP;
Atsushi Shimizu, Kanagawa, JP;
Michio Okamura, Kanagawa, JP;
Atsushi Shimizu, Kanagawa, JP;
Power Systems Co., Ltd., Kanagawa, JP;
Abstract
A capacitor power sourceincluding a plurality of capacitors comprises: an inflection-point voltage detection circuit () for detecting the inflection-point voltage of the capacitor based on a set voltage Vbot; an overvoltage detection circuit () for detecting the overvoltage Vful of the capacitor; and an initialization circuit () for putting charging current of the capacitor into bypass operation using initialization voltage Vini when an initialization mode is selected, wherein charging/discharging control is performed such that a discharging stop signal is generated based on a detection signal of the inflection-point voltage of any one of the plurality of capacitors, a charging stop signal is generated based on a detection signal of the overvoltage of any one of the plurality of capacitors, and an end signal of the initialization charging is generated based on a plurality of bypass operation signals.