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:
Feb. 25, 2003
Rennie Bobb, Wake Forest, NC (US);
Paul Lukosius, Wake Forest, NC (US);
Frederick Tassitino, Jr., Wake Forest, NC (US);
John Tracy, Raleigh, NC (US);
Rennie Bobb, Wake Forest, NC (US);
Paul Lukosius, Wake Forest, NC (US);
Frederick Tassitino, Jr., Wake Forest, NC (US);
John Tracy, Raleigh, NC (US);
Eaton Corporation, Cleveland, OH (US);
Abstract
A UPS is operated by deasserting a static switch drive signal, e.g., a gate signal to a thyristor, and then delaying provision of power from a converter circuit of the UPS, e.g., an inverter or other source of AC power, until after the switch has current commutated to an off state. For example, expiration of a predetermined time interval following deassertion of the switch drive signal may be detected, and the converter circuit may be enabled to drive the output of the UPS responsive to the detected expiration of the predetermined time interval. Alternatively, a current in the static switch may be detected, and the converter circuit may be enabled to drive the output of the UPS responsive to the detected current. The invention may be embodied as methods and apparatus.