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. 11, 2009
Filed:
Nov. 05, 2004
Applicants:
Reinhold Elferich, Aachen, DE;
Peter Lürkens, Aachen, DE;
Inventors:
Reinhold Elferich, Aachen, DE;
Peter Lürkens, Aachen, DE;
Assignee:
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02M 3/335 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention relates to a resonant power LED control circuit for the independent, simultaneous brightness and color or color temperature control of two LEDs () or two groups of LEDs, comprising a single resonant converter which is essentially formed from a half or full bridge DC/AC converter () with a control unit (), a resonant capacitor, and a transformer ().