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:
Jul. 11, 2006
Filed:
Apr. 28, 2005
Kazutoshi Oshiro, Haibara-gun, JP;
Yoshihiro Kawamura, Haibara-gun, JP;
Toshihiro Sone, Wako, JP;
Tadashi Shimada, Wako, JP;
Kazutoshi Oshiro, Haibara-gun, JP;
Yoshihiro Kawamura, Haibara-gun, JP;
Toshihiro Sone, Wako, JP;
Tadashi Shimada, Wako, JP;
Yazaki Corporation, Tokyo, JP;
Honda Motor Co., Ltd., Tokyo, JP;
Abstract
An insulation detecting device having a capacitor and a DC power source, insulated from a ground potential part. A voltage detecting unit, detects a voltage across the capacitor. A first switching unit connects the capacitor to the DC power source in series for a first preset time shorter than a time taken for completely charging the capacitor. A second switching unit connects the capacitor between a positive terminal of the DC power source and the ground potential part in series for a second preset time. A third switching unit connects the capacitor between a negative terminal of the DC power source and the ground potential part in series for the second preset time. A fourth switching unit connects the voltage detecting unit to the capacitor after the first to third switching units are turned off. A computing unit estimates a voltage across the power source.