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:
Jul. 03, 2012
Filed:
Dec. 30, 2008
William Paul Cook, Lexington, KY (US);
Michael Charles Day, Lexington, KY (US);
Wesley David Mcintire, Lexington, KY (US);
William Paul Cook, Lexington, KY (US);
Michael Charles Day, Lexington, KY (US);
Wesley David McIntire, Lexington, KY (US);
Lexmark International, Inc., Lexington, KY (US);
Abstract
A system for delivering desired magnitudes of AC power to a load. A three-cycle power mode includes a 1and 3cycle in which either no AC power, or full power, is delivered to the load, and a 2cycle in which an AC switch is triggered at a desired phase angle to deliver the desired increments of AC power during the 2cycle. AC power is delivered in each cycle in a manner to provide a net zero DC offset in the AC current delivered to the load. A two-cycle mode can be achieved by using the 1and 2cycle, or by using the 2and 3cycles to optimize power delivery performance. A multi-cycle power delivery system can employ both the three-cycle and the two-cycle modes together to minimize the harmonic content during delivery of various power levels.