Koninklijke Philips Corporation N.v.

U.S. Philips Corporation

G&uuml;nther Hans Derra

Dieter Leers

Hanns Ernst Fischer

Xaver Riederer

Klaus B Lohn

Martin Ossmann

Holger Moench

Johannes Martinus De Regt

Hubertus C M Van Den Nieuwenhuizen

Thomas Kr&uuml;cken

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.

Method of and device for operating a gas discharge lamp

A short-arc discharge lamp ( ) is provided with a translucent lamp vessel ( ) which is closed in a gas-tight manner and which is provided with an ionizable fill. A first and a second electrode ( ) are arranged in the lamp vessel ( ) which are each connected to its own current conductor ( ) which extends to outside the lamp vessel. A starting antenna ( ) is arranged near to the lamp vessel, which antenna is connected to a further current conductor ( ). The starting antenna comprises an antenna container ( ) and a further electrode ( ) which antenna container ( ) is closed in a gas-tight manner and contains an ionizable fill, the further electrode ( ) being connected to the further current conductor ( ). This makes it possible to realize a shorter reignition time by means of a higher reignition voltage on the starting antenna while spark-over from the starting antenna ( ) to the lamp vessel ( ) is avoided.

Short-arc discharge lamp with a starting antenna

Growing community of inventors

Aachen, Germany

Günther Hans Derra

Growing community of inventors

Aachen, Germany

G&uuml;nther Hans Derra

Günther Hans Derra