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. 21, 2015
Filed:
Aug. 21, 2012
Minoru Nishio, Nagano, JP;
Takatoshi Oe, Nagano, JP;
Yoshiaki Toyoda, Nagano, JP;
Fuji Electric Co., Ltd., Kawasaki-Shi, JP;
Abstract
An open load and a supply fault are differentiated between and detected with a simple configuration. A switching element (Q) connected between the positive electrode of a direct current power supply and an output terminal () is caused to carry out a switching operation, thereby driving a load () connected to the output terminal (). A load trouble detection circuit () that detects an opening of the load () or a supply fault when the voltage of the output terminal () is higher than the value of a first threshold voltage, and a supply fault detection circuit () that detects a failure of supply to the power supply of the load () when the voltage of the output terminal () is higher than the value of a second threshold value voltage subtracted from the power supply voltage when the switching element (Q) is in an off-state, are included.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile