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:
Jul. 01, 2014
Filed:
Mar. 25, 2011
Charles Capps, Carmel, IN (US);
Charles Capps, Carmel, IN (US);
Enerdel, Inc., Greenfield, IN (US);
Abstract
Systems and methods are provided for monitoring operation of a circuit having a DC power supply, a load, and a switch element connecting the DC power supply to the load. The system includes a capacitive element coupling a first input node of a sensor element to a first interconnection node of the circuit between a first voltage supply terminal of the DC power supply and the load. The system also includes a grounding structure coupling a second input node of the sensor element to a ground plane isolated from the DC power supply. In the system, the grounding structure is positioned with respect to a second interconnection node of the circuit, between a second voltage supply terminal of the DC power supply and the load, so as to define a stray capacitance for carrying a transient signal resulting from the opening or closing of the switch element, which can be detected through the sensor element for monitoring the current switch state of the switch element.