市售的模块式无线遥控开关,其价格昂贵,而且工作原理守口如瓶。本文介绍的无线遥控开关,性能优良、工作稳定可靠。特别是经自己动手制作后,既掌握了其工作原理,使用起来又乐趣无穷。工作原理:图1为发射器的电路原理图。VT1等组成高频振荡器,其振荡频率受编码IC1的调制。被调制 The commercially available modular wireless remote control switch is expensive and works well. This article describes the wireless remote control switch, excellent performance, work stable and reliable. Especially after making it by yourself, it not only mastered its working principle, but also enjoyed the fun. How it works: Figure 1 shows the circuit diagram of the transmitter. VT1 and other components of high-frequency oscillator, the oscillation frequency modulation by the code IC1. Modulated