一些电路图，包括电脑红外遥控，调速风扇，无线免提电话电路，学习型红外遥控终端，智能脉冲自行车充电器等。-Some circuit, including computer infrared remote control, fan speed, wireless hands-free telephone circuits, a learning IR remote control terminals, smart pulse bicycle chargers.

风扇调速电路图，帮你了解其内部结构，解决你的需求-Fan speed control circuit diagram, help you understand its internal structure