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:
Feb. 01, 2000
Filed:
Sep. 24, 1998
Applicant:
Inventor:
John E Parry, Redondo Beach, CA (US);
Assignee:
International Rectifier Corporation, El Segundo, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02M / ;
U.S. Cl.
CPC ...
363 49 ; 363131 ;
Abstract
A circuit for igniting and driving a high ignition voltage load includes first and second series coupled switches arranged in a half bridge circuit having an output node. A step-up transformer has a primary winding that is coupled to the bridge circuit at the output node. A load is coupled to the secondary winding to a return potential. Both the first and second switches are capable of being turned on concurrently for a predetermined interval to supply an ignition voltage across the secondary winding sufficient to ignite the lamp.