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:
Aug. 13, 2013
Filed:
Nov. 09, 2009
Randhir S. Malik, Cary, NC (US);
Jen-ching Lin, Apex, NC (US);
Chu Te Chung, Cary, NC (US);
Cecil C. Dishman, Raleigh, NC (US);
Michael J. Steinmetz, Cary, NC (US);
Randhir S. Malik, Cary, NC (US);
Jen-Ching Lin, Apex, NC (US);
Chu Te Chung, Cary, NC (US);
Cecil C. Dishman, Raleigh, NC (US);
Michael J. Steinmetz, Cary, NC (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
An alternating current-to-direct current (AC-to-DC) power supply has a first stage providing a first DC voltage and a second stage providing a second DC voltage. The AC-to-DC power supply has a first efficiency at the first stage and a second efficiency at the second stage that is less than the first efficiency. The second DC voltage is also less than the first DC voltage. A blower is electrically connected to the first stage of the AC-to-DC power supply to receive the first DC voltage from the AC-to-DC power supply to power the blower. Electrical connection of the blower to the first stage of the AC-to-DC power supply instead of to the second stage of the AC-to-DC power supply wastes less power and is more efficient.