Patent · US Active

Driver circuit arrangement

US7893661B2 · kind B2 · utility

22Cited by

3References

8Claims

0Family size

Assignee

KONINKLIJKE PHILIPS ELECTRONICS NV · NL

Inventors

Bernd Ackermann · Aachen, DE
Henricus Petronella Maria Derckx · Weert, NL
Wilhemus Johannes Robertus Van Lier · Heerlen, NL
Eberhard Waffenschmidt · Aachen, DE

Key dates

Filing date	Oct 2, 2006
Grant date	Feb 22, 2011
Priority date	—
Expiry date	Mar 10, 2028

Classification

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

Abstract

The invention relates to a driver circuit arrangement (1′) for driving a plurality of individually switchable electrical subsystems (A′, B′, C′), such as (arrangements of) LEDs (9-A, 9-B, 9-C). Each subsystem has at least one energy storage device (10-A, 10-B, 10-C), such that when the subsystem is disconnected from the main source (7) of electrical energy, the energy storage device can supply energy to the device(s) of the subsystem. By furthermore providing at least one subswitch (13-A, 13-B, 13-C) in the subsystem, between the energy storage device and an electrical device of the subsystem, control over the device is still possible when the subsystem is disconnected form the main source of electrical energy.

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