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:
Sep. 05, 2017
Filed:
Sep. 09, 2014
Ngk Spark Plug Co., Ltd., Nagoya-shi, Aichi, JP;
Katsunori Yazawa, Kasugai, JP;
Yoshinori Inoue, Nagoya, JP;
NGK SPARK PLUG CO., LTD., Aichi, JP;
Abstract
A load drive apparatus () includes a pulse drive circuit () which applies a pulse voltage PS to a resistive load (); current detection means (S) for detecting the current flowing to the resistive load () through the pulse drive circuit (); level detection means (SS) for determining whether an output terminal voltage VD of the pulse drive circuit () is a high potential level or a low potential level; anomaly detection means (SSS) for detecting a wire breakage anomaly, a short-to-power anomaly, and a short-to-ground anomaly based on the level of the output terminal voltage VD detected by the level detection means (SS) and the current detected by the current detection means (S), when the pulse drive circuitis turned on and off.