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:
Feb. 17, 1998
Filed:
Aug. 16, 1996
Gerald John Michon, Waterford, NY (US);
General Electric Company, Schenectady, NY (US);
Abstract
A compact power circuit configured for circuit breaker applications includes, in one embodiment, a plurality of current transformers, each current transformer being coupled to a respective one of the phase lines of a power line to generate a current proportional to the current in the respective one of the phase lines. The circuit also includes a plurality of operational amplifiers, each of the operational amplifiers being coupled to a respective one of the current transformers. The operational amplifiers generate the phase signals v.sub.a, v.sub.b and v.sub.c respectively. A neutral phase signal Vn is generated by a current transformer coupled to the neutral phase line of the power line. A ground fault signal is generated from the vector sum of signals v.sub.a, v.sub.b, v.sub.c and V.sub.n.