| 摘要 |
A lighting control system comprises an input for receiving a mains supply voltage; an output for providing an output voltage signal for powering plural lamps; a controller; a first transformer connected to the input and being for reducing the mains supply voltage to a reduced voltage; a second transformer having a secondary winding connected in series between the first transformer and the output and having a primary winding connected to the controller, the secondary and primary windings being arranged so as to induce a supplementary voltage in the secondary winding when said primary winding is energised. The controller is configured in a first phase, to provide a first energising signal to the primary winding of the second transformer such as to supplement the reduced voltage provided by the first transformer, thereby to provide an output voltage signal that is greater than the reduced voltage signal and in a second phase, immediately following the first phase, to cease to provide the first energising signal to the primary winding of the second transformer, thereby to provide an output voltage signal in the second phase that is different to the output voltage signal provided in the first phase The controller includes a control input for receiving a control signal from a user, for allowing a user to configure one or more parameters of the lighting control system.
|
