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. 28, 2015
Filed:
Oct. 11, 2011
Carsten Deppe, Aachen, DE;
Georg Sauerländer, Aachen, DE;
Harald Josef Günther Radermacher, Aachen, DE;
Haimin Tao, Eindhoven, NL;
William Peter Mechtildis Marie Jans, Born, NL;
Carsten Deppe, Aachen, DE;
Georg Sauerländer, Aachen, DE;
Harald Josef Günther Radermacher, Aachen, DE;
Haimin Tao, Eindhoven, NL;
William Peter Mechtildis Marie Jans, Born, NL;
KONINKLIJKE PHILIPS N.V., Eindhoven, NL;
Abstract
The present invention relates to an LED lamp () adapted for operation with an alternating current. The LED retrofit lamp () comprises a LED unit ('″) and a compensation circuit with a controllable switching device (′), connected parallel to said LED unit (′″) to provide an alternate current path. A control unit (″) is adapted to control said switching device (′) in a compensation mode in which said switching device (′) is set to the conducting state for the duration of a shunt period in each half cycle of the alternating current to allow adapting the power/current of the inventive LED lamp (), so that a versatile and optimized operation of the lamp () is possible.