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Machine translation
1. (WO1982000561) INSTALLATION FOR STARTING A DISCHARGE LAMP WITH HEATED ELECTRODES
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1982/000561    International Application No.:    PCT/DE1981/000115
Publication Date: 18.02.1982 International Filing Date: 29.07.1981
IPC:
H05B 41/04 (2006.01), H05B 41/298 (2006.01)
Applicants: SIEMENS AKTIENGESELLSCHAFT.
KERSCHER, Max; .
NGUYEN, Anh-Dung;
Inventors: KERSCHER, Max; .
NGUYEN, Anh-Dung;
Priority Data:
Title (EN) INSTALLATION FOR STARTING A DISCHARGE LAMP WITH HEATED ELECTRODES
(FR) INSTALLATION POUR LA MISE EN MARCHE D'UNE LAMPE A DECHARGE AVEC ELECTRODES CHAUFFEES
Abstract: front page image
(EN)Sometimes a discharge lamp is operated with two heated electrodes while still running the feeding auxiliary installation after the start of the lamp. The invention reduces these unnecessary losses. To this effect, each electrode (13, 14) is provided with a parallel diode (D46, D47) so that, in each half-cycle of the main a-c voltage source (C23) the only conductive diode is the one connected to the negative electrode which is the emitter electrode in that half-period. The voltage on the emitter electrode is thereby limited to 1 volt whereas it would be higher without a diode.
(FR)Parfois on exploite une lampe a decharge avec deux electrodes chauffees en laissant marcher l'alimentation auxiliaire apres la mise en marche de la lampe. L'invention reduit ces pertes inutiles. Pour ce faire chaque electrode (13, 14) est munie d'une diode (D46, D47) parallele de sorte que dans chaque demi-alternance de la source de tension alternative principale (C23) seule est conductrice la diode qui est connectee a l'electrode negative qui est emittrice dans cette demi-alternance. Ainsi la tension sur l'ectrode emittrice est limitee a 1 volt, tension qui serait nettement plus elevee sans diode.
Designated States:
Publication Language: German (DE)
Filing Language: German (DE)