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:
Jan. 01, 2013
Filed:
Mar. 02, 2007
Takao Aradachi, Ibaraki, JP;
Kazuhiko Funabashi, Ibaraki, JP;
Takao Aradachi, Ibaraki, JP;
Kazuhiko Funabashi, Ibaraki, JP;
Hitachi Koko Co., Ltd., Tokyo, JP;
Abstract
A charging signal Vi responding to a charging current is inputted to one input terminal (−) of an operational amplifierforming a comparator and a setting signal Vr corresponding to a setting current value is inputted to the other input terminal (+) of the operational amplifier. When the charging signal Vi is not higher than the setting signal Vr, a charging stop signal is generated from the output terminal of the operational amplifierto interrupt a switch unit. A starting signal Vcc larger than the setting signal Vr applied to the other input terminal (+) is applied to the one input terminal (−) of the operational amplifierthrough a condensertill a prescribed time elapses from the start of a charging operation to generate a charging start signal from the output terminal of the operational amplifierand electrically conduct the switch unit