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:
Nov. 24, 2009
Filed:
Feb. 16, 2007
Masaaki Shimizu, Kanagawa, JP;
Katsuji Mitsui, Kanagawa, JP;
Masahiko Shimizu, Kanagawa, JP;
Shinichi Yamamoto, Kanagawa, JP;
Atsushi Shimizu, Kanagawa, JP;
Masahiko Shinotsuka, Kanagawa, JP;
Masaaki Yamagishi, Kanagawa, JP;
Hiroshi Tsuji, Kyoto, JP;
Masaaki Shimizu, Kanagawa, JP;
Katsuji Mitsui, Kanagawa, JP;
Masahiko Shimizu, Kanagawa, JP;
Shinichi Yamamoto, Kanagawa, JP;
Atsushi Shimizu, Kanagawa, JP;
Masahiko Shinotsuka, Kanagawa, JP;
Masaaki Yamagishi, Kanagawa, JP;
Hiroshi Tsuji, Kyoto, JP;
Power Systems Co., Ltd., Kanagawa, JP;
Abstract
A charging apparatus for electrically charging a capacitor storage type power source comprises a switching circuit for turning on/off the charge current, a current detection circuit for detecting the charge current, a voltage detection circuit for detecting the voltage of power source, a constant current control circuit for outputting an error amplifying signal according to the current value, a power control circuit for outputting an error amplifying signal according to the current value, the voltage value-and a power reference value, a constant voltage control circuit for outputting an error amplifying signal according to the voltage value and a voltage reference value, an OR circuit for selecting one of the error amplifying signals and a control circuit for generating a pulse width modulation signal according to the error amplifying signal output from the OR circuit to turn on/off the switching circuit and control the charge current.