Triac dimmer design for low-consumption lamps

摘要

In this paper we explain how dimmers using Triacs should be designed to operate properly with new low consumption lamps like CFLs and LEDs. These design guidelines are defined after an analysis of the impact of the EMI filter on the current ripple amplitude at Triac turn-on. Then, some experiments are performed to check how the control signal has to be set according to the lamp technology and model to be dimmed. Finally, the dimmer power supply concern is discussed.