Patent · US Active

Power supply device for light elements and method for supplying power to light elements

US8067898B2 · kind B2 · utility

6Cited by

4References

20Claims

0Family size

Assignee

KONINKLIJKE PHILIPS ELECTRONICS NV · NL

Inventors

Harald Josef Günther Radermacher · Aachen, DE
Volkmar Schulz · Schwarzenbruck, DE
Matthias Wendt · Neu-Anspach, DE

Key dates

Filing date	Sep 20, 2007
Grant date	Nov 29, 2011
Priority date	—
Expiry date	Aug 30, 2028

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02B20/30
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

Disclosed is a power supply device for light elements, including a first light element having a first color, a second light element having a second color, and a third light element having a third color. The power supply includes a power supply unit, a controllable switch coupled in series to the third light element in parallel to the second light element. The power supply unit has a first and a second output such that the first light element is coupled to the first output and the second and third light elements are coupled to the second output. The power supply unit provides adjustable output signals at the first and said second output such that the third light element radiates light when the switch is closed.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.