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. 24, 2007
Filed:
Dec. 05, 2005
Naoki Maru, Hadano, JP;
Hideho Yamamura, Oiso, JP;
Koji Nisisu, Hadano, JP;
Shigeo Oomae, Hadano, JP;
Naoki Maru, Hadano, JP;
Hideho Yamamura, Oiso, JP;
Koji Nisisu, Hadano, JP;
Shigeo Oomae, Hadano, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
In the current detection circuit that detects the output currents of a switching power supply circuit, an improved current detection circuit makes it possible to detect the output current directions of power supplies solves the malfunction of the power supplies vibrating or diverging during changes in load state and during parallel operation, and thus implements stable operation. The direction of an output current Ican be detected by using the current detection circuitthat has multiple switching elements Sto Seach operating synchronously with an inverter circuit.