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:
Jun. 12, 2012
Filed:
Jan. 27, 2009
Applicant:
Thomas Bruce Meagher, Houston, TX (US);
Inventor:
Thomas Bruce Meagher, Houston, TX (US);
Assignee:
Rockwell Automation Limited, Maldon, Essex, GB;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02H 3/18 (2006.01);
U.S. Cl.
CPC ...
Abstract
A system for protecting against reverse current flow in an output module of an Industrial Process Control System includes a transistor that is driven by a control signal and a current monitor arranged to monitor a current through the transistor. The system includes a processor that is arranged to receive the monitored current and to generate the control signal in dependence upon the monitored current. The processor is configured to turn off the transistor if a reverse current is detected in the transistor. Extension of the system provides a power feed combiner that is protected against reverse current flow.