Improvements relating to lighting systems

Details Improvements relating to lighting systems Improvements relating to lighting systems

H - Electricity

05

B

H05B 33/08 (2006.01)

Patent

CA 2682380

A power adaptor (20) for a lighting unit (50) having a solid state light source (50a,50b,50c) is disclosed. The power adaptor (20) comprises an input (22) for connection to a mains power supply, a power transfer module (40a,40b,40c,140a) that is coupled to the input (22) and provides an output suitable for driving the solid state light source (50a,50b,50c), and a controller (30) that receives a voltage signal from the input (22) and is able to deliver a control signal to the power transfer module (40a,40b,40c,140a) for reducing the power drawn from the input (22). The power adaptor (20) draws current from the input (22) as a function of the voltage at the input (22) in order that the power adaptor (20) appears as a variable resistor to the mains supply.

Adaptateur électrique (20) destiné à une unité (50) d'éclairage ayant une source (50a, 50b, 50c) de lumière à état solide. L'adaptateur électrique (20) comprend une entrée (22) servant à relier à un bloc d'alimentation principal un module (40a, 40b, 40c, 140a) de transfert d'énergie qui est couplé à l'entrée (22) et fournit une sortie appropriée à l'entraînement de la source (50a, 50b, 50c) de lumière à état solide, et un dispositif (30) de commande qui reçoit un signal de tension depuis l'entrée (22) et qui est capable de distribuer un signal de commande au module (40a, 40b, 40c, 140a) de transfert d'énergie pour réduire l'énergie acheminée depuis l'entrée (22). L'adaptateur électrique (30) achemine le courant depuis l'entrée (22) en fonction de la tension sur l'entrée (22) afin que l'adaptateur électrique (20) apparaisse comme une résistance variable sur le bloc d'alimentation principal.

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