公开(公告)号：EP1905279A1

公开(公告)日：2008-04-02

申请号：EP06780014.4

申请日：2006-07-03

申请人： Koninklijke Philips Electronics N.V. ,  Philips Intellectual Property & Standards GmbH

发明人： DEPPE, Carsten ,  LUERKENS, Peter ,  DURAN, Raul

IPC分类号： H05B41/288 ,  H05B41/04

CPC分类号： H05B41/2881 ,  H05B41/042 ,  Y02B20/204

摘要： 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.