20150289329 | Lighting Control System Using Input Voltage Dependent Control - A method and apparatus for controlling gain factor in a driver device for a lighting device according to the input voltage signal to reduce output current or output power dependency on the amplitude of the input voltage signal. One method couples an input voltage signal to the input port of the driver device and couples an output branch to the output port of the driver device. The gain factor is adjusted according to the input voltage signal to reduce output current or output power dependency on input voltage amplitude of the input voltage signal. The gain factor can also be configured according to a reference voltage and the output voltage across the output port to deliver a substantially constant output power. | 10-08-2015 |