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. 04, 2007
Filed:
Jun. 02, 2004
Ronald T. Zipagan, Greenwood, SC (US);
Ronald T. Zipagan, Greenwood, SC (US);
Eaton Corporation, Cleveland, OH (US);
Abstract
A drive circuit, such as an electronic trip device, is for a shunt trip coil of a network protector. The drive circuit includes an alternating current input adapted to receive an alternating current voltage and a first half-wave rectifier adapted to provide a plurality of direct current voltages from the alternating current input. An energy store, such as a plurality of electrolytic capacitors, is adapted to provide a first direct current output from the direct current voltages of the first half-wave rectifier. A sensor circuit monitors the alternating current input and the first direct current output and provides a second output from one of the alternating current input and the first direct current output. A second full-wave rectifier responds to the second output and the trip signal to provide a third direct current output adapted to drive the network protector shunt trip coil.