Patent · US Active

Gas discharge lamp ignition

US8022644B2 · kind B2 · utility

1Cited by

6References

5Claims

0Family size

Assignee

KONINKLIJKE PHILIPS ELECTRONICS NV · NL

Inventors

Carsten Deppe · Aachen, DE
Peter Luerkens · Aachen, DE
Raul Duran · Barcelona, ES

Key dates

Filing date	Jul 3, 2006
Grant date	Sep 20, 2011
Priority date	—
Expiry date	May 5, 2028

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02B20/00
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

Ignition of a gas discharge lamp 10, which has a gas containing main space and two inner electrodes, of a lighting unit 4 of a lighting system is achieved by the use of a high frequency resonance circuit. The resonance circuit is connected to the inner electrodes and to a supply device 2, which supplies an alternating supply voltage. An outer electrode 22 is arranged near one the inner electrodes and to a node of the resonance circuit. Upon supplying the supply voltage a high voltage alternating burst will be generated at the outer electrode. This will result into a discharge of the gas in the main space. In turn, this will induce a discharge of the remaining gas. Then the frequency of the supply voltage will increase and a small reactive current only will remain to flow through the resonance circuit.

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