数字万用表毕业论文

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1、摘要数字万用表DMM(DitalMultiMeter)采用大规模集成电路和液晶数字显示技术，具有结构简单、测量精度高、输入阻抗高、显示直观、过载能力强、功能全、耗电省、自动量程转换等优点，许多数字万用表还带有测电容、频率、温度等功能。本课题的主要内容是理解DT-830B型数字万用表的基本结构和原理，通过数字万用表的组装与调试，培养电子产品安装测试技能。关键词：数字万用表原理安装调试测试21目录第一章绪论..........................................................................................

2、........................11.1数字万用表的概述·································································································11.3数字万用表的分析和制作意义第二章DT830B型数字万用表的结构和特点...................................................................112.1数字万用表的结构组成········································

3、···················································12.2DT830B型数字万用表的特点·················································································3第三章DT830B型数字万用表的安装与调试...................................................................173.1印制电路板元器件的安装与焊接··································

4、···········································93.1.1清点和识别元件····························································································13.1.2立式电阻、电位器立式、二极管的安装··························································13.1.3锰铜丝电阻、晶体管测试座、电池扣、保险管座和输入插座的安装················23.1.4液晶片、斑马条

5、框架和斑马条的安装·····························································23.1.5弹簧、旋纽等的安装·····················································································23.1.6后盖安装······································································································23.2DT-830B

6、数字万用表的调试····················································································2第四章DT830B型数字万用表的测试与使用时因注意的事项...........................................174.1数字万用表的测试·································································································14.1.1电压测量21·······

7、·······························································································14.1.2电流测量······································································································14.1.3电阻测量·························