姥姥和小外孙女有一个特别不好的生活习惯,就是喜欢在卫生间“方便时”看闲书,虽然不碍什么大事,但长此以往不但身体健康受到影响,也耽误了不少宝贵的时间。笔者通过思考,决定采用控制卫生间照明时间的长短来“扼制”她们这种不良行为,但同时又不能影响平时的正常使用,下图是由一个时间继电器和一个数码分段开关组成的简单控制电路,就可实现上述功能。 Grandma and granddaughter have a particularly bad living habits, is like in the bathroom “convenience ” look leisurely, although not obstruct the event, but the long run not only affected the health, but also delayed a lot of valuable time. The author through thinking, decided to use the control of the length of the bathroom lighting “to curb ” their bad behavior, but at the same time can not affect the usual normal use, the following figure is composed of a time relay and a digital section switch Control circuit, you can achieve the above functions.