LIGHTING SYSTEM

摘要

PROBLEM TO BE SOLVED: To eliminate a load output difference between light dimming electronic ballasts A and B different in a light dimming range to output of a dimmer 1. SOLUTION: In this lighting system, the dimmer 1 for outputting an on-duty variable PWM signal and the light dimming electronic ballasts A and B for changing light dimming output by on-duty exist in the same control unit, and an on-duty value of the light dimming electronic ballast A corresponding to the same load electric current becomes an on-duty value or more of the light dimming electronic ballast B. A converter 2 is arranged between the dimmer 1 and the light dimming electronic ballast B for changing an on-duty value of an inputted PWM signal so as to match to a light dimming level of the light dimming electronic ballast A.