Patent ID: 9750093
Date: 2017-08-29
CPC Classifications: H05B,Y02B

Claim:
1. A lighting application comprising: an LED assembly comprising two or more LED units, each LED unit comprising one or more LEDs, the LED assembly further comprising a switch assembly comprising one or more controllable switches for modifying a topology of the LED assembly from a series connection of two of the LED units to a parallel connection of the two of the LED units, the LED assembly, in use, being powered from a supply voltage, and a control unit comprising an input terminal arranged to receive a signal representing a voltage level of the supply voltage or a load current of the LED assembly, output terminal for providing a control signal to the switch assembly to control the switch assembly in accordance with the signal, thereby modifying the topology of the LED assembly from the series connection of two of the LED units to the parallel connection of the two of the LED units when the signal representing the voltage level of the supply voltage indicates that the voltage level of the supply voltage is reduced, and a waveform analyzer arranged to assess the supply voltage and provide the signal to the control unit.