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Publication of FR576002ApublicationCriticalpatent/FR576002A/fr
H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
H05B47/10—Controlling the light source
FR576002D1924-01-191924-01-19Appareil pour la mise en veilleuse automatique et progressive d'une lampe électrique à incandescence
ExpiredFR576002A
(fr)