Patent · US Expired

Method of and device for operating a gas discharge lamp

US6586892B2 · kind B2 · utility

11Cited by

15References

19Claims

0Family size

Assignee

KONINKLIJKE PHILIPS ELECTRONICS NV · NL

Inventors

Gunther Hans Derra · Aachen, DE
Hanns E. Fischer · Stolberg, DE
Thomas Krücken · Aachen, DE
Holger Moench · Vaals, NL
Xaver Riederer · Aachen, DE

Key dates

Filing date	Apr 24, 2001
Grant date	Jul 1, 2003
Priority date	—
Expiry date	Apr 24, 2021

Classification

Technology area (CPC H)Electricity
CPC primaryH05B41/2928
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A method of and a device for operating a gas discharge lamp which is fed with an alternating voltage or an alternating current and wherein the instantaneous power of the lamp is increased at given time intervals are used to form the electrodes. The value of an operational datum of the lamp which varies in time is continuously or discontinuously measured and the frequency of the alternating voltage or the alternating current (operating frequency) is selected in dependence on the measured values.

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