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:
Mar. 01, 1994
Filed:
Sep. 02, 1992
Applicant:
Inventor:
George Oughton, Raleigh, NC (US);
Assignee:
Exide Electronics Corporation, Raleigh, NC (US);
Primary Examiner:
Int. Cl.
CPC ...
H02M / ;
U.S. Cl.
CPC ...
363 17 ; 363 98 ; 363132 ;
Abstract
A UPS system comprising a resonant control circuit 100, a gate drive circuit 200, a resonant converter 300, a bootstrap power supply circuit 400 for supplying an isolated DC supply voltage to the resonant control circuit, a bootstrap battery charger 500, and a variable speed fan drive circuit 600.