| 摘要 |
A power control system for an illumination system 1 has a power source 10 to supply any one of a range of AC or DC voltages, a power conversion stage, one or more light emitting devices 120 for illumination and/or wireless communication, a controller controlling an output stage 90 to receive and send information in order to regulate the power and/or current to the light emitting devices and a programmable voltage clamping or linear regulator arrangement contained within the output stage that can be controlled to increase a dynamic dimming ratio of current and/or power through the light emitting devices and to enable power or current modulation for wireless optical communication of said light emitting devices. The power control system enables current and hence power to be provided to light emitting devices with a vastly extended dynamic dimming range such that a wide range of different light emitting devices can be powered using the same driver output stage. |
