Patent ID: 9380659
Filing Date: 2016-06-28
CPC Classification: H05B

Claim Text:
1. A device configured to supply electrical power to a load comprising an LED unit having one or more LEDs, the device comprising: a connection element for electrically connecting the device to an external power source via a phase-cut dimmer, the power source providing a periodic alternating current (AC) supply voltage, and the phase-cut dimmer having a triac and a timing capacitor for turning on the triac in response to the AC supply voltage, the phase-cut dimmer providing an input voltage for powering the load, a monitoring device for monitoring a leakage current of the load during a first time interval of the periodic AC supply voltage when a triac of the phase-cut dimmer is switched off, the leakage current charging the timing capacitor during the first time interval, and a signal controller connected to the connection element for providing an electrical compensation signal to the connection element during a second time interval of the periodic AC supply voltage when the triac of the phase-cut dimmer is switched off, subsequent to the first time interval, on the basis of the leakage current of the load monitored by the monitoring device during the first time interval, wherein the electrical compensation signal compensates for a charge which is accumulated in the timing capacitor of the phase-cut dimmer during the first time interval due to the leakage current of the load during the first time interval.