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:
Apr. 09, 2002
Filed:
Mar. 23, 2001
Stanley Canter, Hermosa Beach, CA (US);
The Boeing Company, Chicago, IL (US);
Abstract
A redundant AC power system has at least two AC power sources, each of which includes an AC voltage supply connected to the primary winding of a source transformer. The source transformers have secondary windings with two outputs and a grounded center tap. There is a steering diode in series with each output. The redundant AC power sources supply power to one or more load systems. The output sides of the respective diodes for the two AC power sources are connected to the respective inputs of the primary winding of a load transformer with a pair of load-transformer primary inputs and a load-transformer primary center tap connectable to ground. A switch controllably connects the center tap of the load transformer to ground. A load is connected to the secondary winding of the load transformer.