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. 31, 2006
Filed:
Apr. 26, 2004
Yoshikazu Nomoto, Utsunomiya, JP;
Takafumi Tsurumi, Utsunomiya, JP;
Toshiaki Ariyoshi, Utsunomiya, JP;
Mitsuteru Yano, Kawachi-gun, JP;
Yoshikazu Nomoto, Utsunomiya, JP;
Takafumi Tsurumi, Utsunomiya, JP;
Toshiaki Ariyoshi, Utsunomiya, JP;
Mitsuteru Yano, Kawachi-gun, JP;
Honda Motor Co., Ltd., Tokyo, JP;
Abstract
A control section sets a positive side switching element of a positive side detection section and a negative side switching element of a negative side detection section to ON, thus outputting an ON signal. When the switching elements are set ON, a predetermined current outputted from a positive side constant current source and a negative side constant current source, or a portion of this current, flows through detection resistors. A ground fault decision section decides whether a ground fault has occurred in the positive or the negative side of a direct current power source, based upon the value of an output voltage detected by a positive side voltage detector, or upon the value of an output voltage detected by a negative side voltage detector. Ground faults are accurately detected with a simple structure.