Control gear for fluorescent lamps

Details Control gear for fluorescent lamps Control gear for fluorescent lamps

H - Electricity

05

B

H05B 41/285 (2006.01)

Patent

CA 2332464

A control gear for fluorescent lamps, which comprises two or more lamp circuits for igniting and burning fluorescent lamps, the lamp circuits comprising supply and ignition components (L1, C1; L2, C2) specific for each lamp, and a supply line (Vdc) which is arranged to supply voltage to the lamp circuits. The control gear also comprises a switching element (S1) connected to the supply line and common to all lamp circuits, which element is arranged to stop the supply of all lamp circuits, lamp circuit-specific switching elements (S2, S3) arranged to control the voltage of the lamps in the lamp circuits, a control unit (A) which is arranged to control the common switching element (S1) and the lamp circuit-specific switching elements (S2, S3), and lamp circuit-specific circuits (B1, B2) identifying defective fluorescent lamps, which identifying circuits are arranged to transmit information on defective fluorescent lamps to the control unit (A).

Cette invention concerne une commande pour lampes fluorescentes constituée par au moins deux circuits de lampe pour l'allumage et l'éclairage des lampes fluorescentes, lesquels circuits comprennent eux-mêmes des organes d'alimentation et d'allumage (L1, C1; L2, C2) propres à chacune des lampes, et par une ligne d'alimentation (V¿dc?) conçu pour fournir la tension d'alimentation aux circuits de lampe. Le dispositif de commande comporte également un élément de commutation (S1), relié à la ligne d'alimentation et commun à tous les circuits de lampe, qui sert à couper l'alimentation de tous ces circuits ; des éléments de commutation propres aux circuits de lampe (S2, S3) destinés à réguler la tension dans lesdits circuits ; une unité de commande (A) conçu pour commander l'élément de commutation commun (S1) et les éléments de commutation propres aux circuits (S2, S3), et des circuits propres aux circuits de lampe (B1, B2) dont la fonction est de repérer les lampes défectueuses et de transmettre des informations sur les lampes fluorescentes défectueuses à l'unité de commande (A).

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