文档介绍：课程设计任务书学生姓名: 专业班级: 指导教师:杨媛媛工作单位: 信息工程学院题目: 家电延时保护器初始条件: 具备模拟电子电路的理论知识; 具备模拟电路基本电路的设计能力; 具备模拟电路的基本调试手段; 自选相关电子器件;可以使用实验室仪器调试。要求完成的主要任务: (包括课程设计工作量及其技术要求,以及说明书撰写等具体要求) 1 、输入电压 198 ~ 240v 时,给负载正常供电,显示 2 、输入电压 Vi<198 ,及 Vi>240 时,对负载断电,并作高低超压显示 3 、电压恢复正常后,延时 5 秒,恢复供电 4、 25w 灯泡作负载 5 、安装调试并完成符合学校要求的设计说明书时间安排: 一周,其中 3 天硬件设计, 2 天硬件调试指导教师签名: 年月日系主任(或责任教师)签名: 年月日目录摘要································································1 1课题的提出依据和意义············································2 2本课题的主要任务和研究内容······································2 本课题的主要任务···········································2 本课题研究的主要内容·······································3 3电路组成和工作原理··············································4 直流稳压电流部分···········································5 窗口比较器···············································5 555 时基电路·····································6 电磁继电器··········