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. 31, 2012
Filed:
Dec. 21, 2009
Robert Dimarco, Research Triangle Park, NC (US);
Randhir S. Malik, Research Triangle Park, NC (US);
Robert DiMarco, Research Triangle Park, NC (US);
Randhir S. Malik, Research Triangle Park, NC (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
An apparatus, system, and method are disclosed for providing alternating current ('AC') power redundancy in power supplies. A first input module is configured to receive a first AC power input waveform. A second input module is configured to receive a second AC power input waveform. A first switch and second switch are controlled by a switching logic module to select one of the AC power input waveforms for use by a power supply. If the first AC power input waveform is present, then it is selected for use. If both the first and second AC power input waveforms are present, then the first AC power input waveform is selected for use. If only the second AC power input waveform is present then it is selected for use.