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:
Nov. 17, 1987
Filed:
Dec. 05, 1986
Applicant:
Inventors:
Donal E Baker, American Township, Allen County, OH (US);
Mirza A Beg, Lima, OH (US);
Assignee:
Westinghouse Electric Corp., Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G04C / ; H02J / ;
U.S. Cl.
CPC ...
368 46 ; 307 87 ;
Abstract
A clock control system for a multiple channel electric power system includes a master clock circuit and control circuitry in each parallel connected channel. The channel control circuits are intially phase-locked to a master clock signal. If the master clock signal is out of a preselected frequency range, the individual channel control circuits are decoupled from the master clock signal and one of those circuits produces a backup clock signal. The control circuits in the remaining channels are then phase-locked with the backup clock signal to provide continued parallel system operation.