本刊今年第6期《168A型智能打铃机》一文首提到将该打铃机输出部分稍加改进,可改装成每天20次开关的钟控定时器,不少读者询问其改进方法及应用实例,现请李浩然和王庆强两位撰文作具体介绍,以飨读者。 This issue No. 6 of this year, “168A Intelligent Ringing Machine,” the first article mentioned the bell part of the output slightly improved, can be converted into 20 times a day clock timer switch, many readers asked about its improvement and Application examples, please Li Haoran and Wang Qingqiang two author for a specific introduction to readers.