Circuit arrangement

H - Electricity – 05 – B

Patent

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Details

H05B 41/14 (2006.01) H05B 41/04 (2006.01) H05B 41/288 (2006.01) H05B 41/292 (2006.01)

Patent

CA 2164512

The invention relates to a circuit arrangement for igniting a high-pressure discharge lamp (L), provided with input terminals (C, D) for connecting a supply source; a pulse-generating circuit (IV) with a natural frequency and provided with a voltage-dependent breakdown element (3); a pulse transformer (1); and an electrical connection between a secondary winding (12) of the pulse transformer and lamp connection terminals (E, F). According to the invention, the secondary winding and the lamp connection terminals form part of a filter whose tuning is chosen in relation to the natural frequency of the pulse-generating circuit.

L'invention concerne une configuration de circuit pour l'allumage d'une lampe à décharge à haute pression (L), dotée de bornes d'entrée (C, D) pour le branchement sur une source d'alimentation, d'un circuit générateur d'impulsions (IV) avec une fréquence propre et pourvu d'un élément de rupture dépendant de la tension (3), d'un transformateur (1) d'impulsions, et d'une connexion électrique entre l'enroulement secondaire (12) du transformateur d'impulsions et les bornes de connexion de la lampe (E, F). Selon l'invention, l'enroulement secondaire et les bornes de connexion de la lampe font partie intégrante d'un filtre dont la syntonisation est choisie en fonction de la fréquence propre du circuit générateur d'impulsions.

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