To make FFL operate in steady state for improving the luminance qualities, the proposed system is with feedback control and controls the duty cycle of dimming signal to regulate the brightness of FFL.

• 为使平面萤 光灯操作于稳定状态以提升发光品质，文中系藉由回授控制并 结合脉宽调变之调光方式，改变平面萤光灯平均电流达致调光 目的，使得平面萤光灯具线性且宽广之调光范围。