目录1．设计要求与目的............................................................................................................................................21.1设计背景......................................................................................................................................................21.2设计目的......................................................................................................................................................22．方案论证........................................................................................................................................................32.1原理方框图..................................................................................................................................................32.2晶闸管的工作原理.......................................................................................................................................32.3各部分电路的分析.......................................................................................................................................62.3.1声音放大电路……………………………………………………………………………………………2.3.2整流电路………………………………………………………………………………………………..2.3.3光敏电路…………………………………………………………………………………………………2.3.4电子开关………………………………………………………………………………………………..2.3.5延时电路与交流开关…………………………………………………………………………..………2.3.5电源电路………………………………………………………………………………………………..2.4方案选择.........................................................................................................................................................82.4.1主控电路……………………………………………………………………………………………….2.4.2电子元器件的选取…………………………………………………………………………………….2.5原理图及原理…………………………………………………………………………………….…………92.5.1电路原理图……………..……………………………………………………………………………....92.5.2电路工作原理…………………………………………。……………………………………………..103．元器件选取.................................................................................................................................................113.1元器件清单………………………………………………………………………….…………….……123.2重要元器件的识别……………………………………………………………….………………….…124.实验论述…………………….…………………………………..……………………………….……...144.1电路模拟仿真图（附录一）4.2测量参数…………………………………………………………………………………….…….……154.3电路调试………………...………………………………………………………………….…….……155．结论分析.....................................................................................................................................................166．心得体会.....................................................................................................................................................16参考文献.................................................................................................................................
