该控制器白天不工作,夜幕降临时,自动接通电源点亮广告灯,并延时到夜深人稀时自动再将电源切断。到第二天夜晚重复工作。此控制器不但使用方便,而且性能可靠、电路简单,我们为客户制作的大型广告牌、灯箱配此控制器效果很好。电路原理如图1所示:市电经C1、R1、D1、DW、C2降压、稳压、整流、滤波后提供稍小于 The controller does not work during the day, night falls, automatically turn on the power to light the advertisement light, and delay to the night when the rage automatically cut off the power again. Repeat the work until the next night. This controller is not only easy to use, but also reliable, simple circuit, we made for clients large billboards, light boxes with this controller works well. Circuit diagram shown in Figure 1: Mains by C1, R1, D1, DW, C2 buck, regulator, rectifier, filtered slightly less than