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. 05, 2013
Filed:
Dec. 29, 2008
Applicants:
Ronald Van Der Werf, Waalre, NL;
Jacobus Govert Sneep, Bavel, NL;
Arjan Van Den Berg, Shanghai, CN;
Inventors:
Assignee:
NXP B.V., Eindhoven, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05B 37/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
A drive circuit for delivering an AC voltage to an array of electro-luminescent lamps (to) includes a single coil (), the energy in which is transferred to each lamp through a corresponding switch assembly (to) having positive and negative-going paths for conducting positive and negative voltages to the corresponding lamp. The magnitudes of the voltages applied to the parallel-connected lamps are controllable so that the illumination levels of the lamps are individually adjustable.