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. 02, 2014
Filed:
Mar. 09, 2012
Scott A. Bullock, Bristol, VA (US);
Scott A. Bullock, Bristol, VA (US);
Electro-Mechanical Corporation, Bristol, VA (US);
Abstract
A blown fuse detector of the general type which monitors voltage drop across a fuse. Embodiments of the invention in particular are applicable to medium voltage AC fuse circuits, operating within the approximate voltage range 2,400 to 38,000 volts. The blown-fuse detector includes first and second electrical connection structures for electrically connecting the first and second conductor portions to the first and second fuse terminals, respectively. A voltage differential detector circuit has first and second differential inputs and is operable to generate a detector output when the voltage across the differential inputs exceeds a predetermined of threshold voltage. First and second capacitors capacitively couple the first and second electrical connection structures to the first and second differential inputs, respectively, the capacitors serving as capacitively-coupled voltage sensors.