| 摘要 |
PROBLEM TO BE SOLVED: To prevent undesired power loss in a bleeder circuit and malfunction of a triac dimmer.SOLUTION: An LED illumination system 1 includes: a phase dimmer DIM performing phase control of an AC voltage (an output voltage of a commercial AC power supply P); a plurality of LED illumination devices Y10 having a phase dimming function according to a phase angle of the AC voltage; and a bleeder circuit X15 provided only one in the system and supplying a bleeder current IB to the phase dimmer DIM. |
