文件名称：数字式定时开关控制器
文件大小：870KB
文件格式：DOC
更新时间：2015-01-13 05:09:11
定时 开关
目录 前言······························································1 第一章 设计内容及要求············································2 第二章 系统设计方案选择 2.1 方案一···················································3 2.2 方案二···················································4 第三章 系统组成及工作原理 3.1 系统组成··················································5 3.2 工作原理··················································5 第四章 单元电路设计、参数计算、器件选择 4.1 控制电路···················································6 4.2 秒脉冲发生电路·············································6 4.3 计数器·····················································7 4.4 译码显示电路···············································8 4.5 报警电路···················································10 第五章 实验、调试及测试结果与分析································11 结论······························································12 参考文献··························································12 附录一····························································13 附录二···············································