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. 23, 2016
Filed:
Jan. 13, 2012
Christian Hattrup, Wurselen, DE;
Georg Sauerländer, Aachen, DE;
Carsten Deppe, Aachen, DE;
KONINKLIJKE PHILIPS N.V., Eindhoven, NL;
Abstract
The present invention relates to a driver device () and a corresponding driving method for driving a load (), in particular an LED unit () including one or more LEDs, said driver device comprising a power input unit () for receiving an input voltage (V) from an external power supply () and for providing a rectified supply voltage (V), a controllable resistor () for providing a load current (I L) to power the load (), a frequency filter () connected to the power input unit () for providing a voltage (V) to the load (), wherein the frequency filter () is partially coupled in parallel to the load () and connected to the controllable resistor () to provide a substantially constant electrical power to the load ().