H - Electricity – 05 – B
Patent
H - Electricity
05
B
H05B 41/298 (2006.01)
Patent
CA 2409380
The invention relates to a novel ballast device for pre-heating, starting and operating at least one UV emitter, constructed in the form of a gas discharge lamp with two heating coils lying opposite each other in relation to a gas discharge path, whereby four electrical connections are provided in total for each of such gas discharge paths, namely two for each heating coil. According to the invention, switching means are provided for a parallel switching of both of said connectors of a heating coil, dependent upon operating conditions. A capacitive loading of the ballast device is thus avoided by means of the otherwise open connector line for the heating coil and the current feed to the coils is evenly distributed.
L'invention concerne un nouveau ballast conçu pour préchauffer, allumer et faire fonctionner au moins un émetteur de rayonnement U.V. du type lampe à décharge. Ce ballast comprend deux filaments de chauffage situés à l'opposé par rapport à une voie de décharge gazeuse. Chaque émetteur de rayonnement de ce type comporte au total quatre connexions électriques, à savoir deux connexions chacun pour chaque filament de chauffage. Des dispositifs de commutation servent au montage en parallèle de chacune des deux connexions d'un filament de chauffage, lequel montage dépend de l'état de fonctionnement. On évite ainsi une charge capacitive du ballast par la ligne de branchement ouverte des filaments de chauffage et l'alimentation en courant des filaments est répartie de manière uniforme.
Fischer Joachim
Riepe Dirk
Rudkowski Jan Boris
Itt Manufacturing Enterprises Inc.
Smart & Biggar
Wedeco Ag
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