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.

Date of Patent:
Apr. 01, 2014

Filed:

Mar. 16, 2011
Applicants:

Keisuke Ueta, Susono, JP;

Akinori Maruyama, Susono, JP;

Yoshihide Nakamura, Susono, JP;

Yoshinori Ikuta, Susono, JP;

Hideo Suganuma, Okazaki, JP;

Inventors:

Keisuke Ueta, Susono, JP;

Akinori Maruyama, Susono, JP;

Yoshihide Nakamura, Susono, JP;

Yoshinori Ikuta, Susono, JP;

Hideo Suganuma, Okazaki, JP;

Assignee:

Yazaki Corporation, Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02H 3/20 (2006.01);
U.S. Cl.
CPC ...
Abstract

A controllerturns on a semiconductor switchin a normal mode, and turns off the semiconductor switchin a sleep mode. A bypass resistoris connected in parallel to the semiconductor switch. A resistance value of the bypass resisteris so large as that in the sleep mode, a dark current is supplied to an electronic devicevia the bypass resistor, and if an electric wire downstream of the bypass resistor is short-circuited, an electric current more than a permissive current is prevented from flowing to the electric wire.


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