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:
Apr. 23, 2002
Filed:
Sep. 28, 2000
Applicant:
Inventor:
Everaard Marie Jozef Aendekerk, Eindhoven, NL;
Assignee:
U.S. Philips Corporation, New York, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H05B 3/702 ;
U.S. Cl.
CPC ...
H05B 3/702 ;
Abstract
In a circuit arrangement for operating at least one lamp, and comprising two power feedback loops, a transformer with two primary windings and one secondary winding is included in the load circuit. The voltage present at a common terminal of the two primary windings is fed back by one of the feedback loops. The circuit arrangement can operate lamps with a lamp voltage that is much higher than the rms voltage of the mains supply generating only a limited amount of total harmonic distortion.