现介绍一种供车间内使用的大面积照明开关、具有定时开,关的功能,它是由一个晶体管闹钟控制的。只要一次对好时间,就可以长时间连续自动工作。当把这种钟控照明开关用在两班工作制的车间里时,节电效果较为明显,因为可以把关灯时间定在半夜职工下班后,而不像光电控制电路要等到天亮才能把灯关上。 Now introduce a large area for the use of the workshop lighting switch, with a timer on and off function, which is controlled by a transistor alarm. As long as a good time, you can work continuously for a long time. When this bell-controlled lighting switch is used in the two-shift work-shop, the power-saving effect is more obvious because it can set the turn-off time at midnight after work, instead of waiting until dawn before the photoelectric control circuit lights close.