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. 08, 2008
Filed:
Sep. 08, 2004
Hideho Yamamura, Oiso, JP;
Naoki Maru, Hadano, JP;
Satoshi Tomioka, Nagaoka, JP;
Motoharu Ueguri, Nagaoka, JP;
Hideho Yamamura, Oiso, JP;
Naoki Maru, Hadano, JP;
Satoshi Tomioka, Nagaoka, JP;
Motoharu Ueguri, Nagaoka, JP;
Hitachi, Ltd., Tokyo, JP;
Densei-Lambda K.K., Tokyo, JP;
Abstract
In a redundant configuration with multiple power sources connected in parallel to enhance reliability, a power source in which an overvoltage failure occurred has been difficult to identify and unable to be deactivated, which has impeded the improvement of reliability. However, it has become possible to deactivate selectively only the power source in which an overvoltage failure has occurred, by providing a independency-discrimination circuit that identifies the occurrence of the overvoltage failure by use of the state of a parallel operation control circuit, and connecting the independency-discrimination circuit, an overvoltage detection circuit, and a connection circuit.