第1 章 万用表的使用······································································ 1__eol__1.1 指针式万用表······································································· 1__eol__1.1.1 指针式万用表的结构······················································· 1__eol__1.1.2 指针式万用表的使用前准备和注意事项································ 3__eol__1.1.3 指针式万用表电阻挡的使用方法········································· 3__eol__1.1.4 指针式万用表电压挡的使用方法········································· 5__eol__1.1.5 指针式万用表电流挡的使用方法········································· 7__eol__1.2 数字万用表·········································································· 8__eol__1.2.1 数字万用表的结构和工作原理············································ 8__eol__1.2.2 DT-9205A 数字万用表的使用方法······································· 9__eol__1.2.3 DT-9205A 数字万用表的使用注意事项································· 11__eol__1.3 技能训练—万用表的使用····················································· 11__eol__实训1 指针式万用表的使用···················································· 11__eol__实训2 数字万用表的使用······················································· 13__eol__第2 章 电阻器的识别与检测····························································· 15__eol__2.1 电阻器的感性认识································································ 15__eol__2.1.1 常见电阻器的外形························································· 15__eol__2.1.2 印制电路板上的电阻器··················································· 16__eol__2.2 电阻器的分类、型号命名方法及主要参数··································· 16__eol__2.2.1 电阻器的分类······························································· 16__eol__2.2.2 电阻器的型号命名方法··················································· 18__eol__2.2.3 电阻器的主要参数························································· 19__eol__2.3 电阻的标注方法··································································· 25__eol__2.4 固定电阻器的检测与代换······················································· 27__eol__2.4.1 固定电阻器的检测方法··················································· 27__eol__2.4.2 固定电阻器的修复与代换················································ 28__eol__2.5 电位器·············································································· 29__eol__2.5.1 电位器的作用和分类······················································ 29__eol__2.5.2 常用电位器介绍···························································· 30__eol__2.5.3 电位器的选用和质量检测················································ 34__eol__2.5.4 电位器的修复······························································· 36__eol__2.6 技能训练—用万用表测量电阻··············································· 37__eol__第3 章 电容器的识别与检测····························································· 39__eol__3.1 电容器的感性认识································································ 39__eol__3.1.1 印制电路板上的电容器··················································· 39__eol__3.1.2 常见电容器的外形························································· 40__eol__3.2 电容器的电容量及单位·························································· 42__eol__3.3 电容器的作用及电路符号······················································· 43__eol__3.3.1 电容器的作用······························································· 43__eol__3.3.2 电容器的电路符号························································· 43__eol__3.4 电容器的型号命名方法·························································· 43__eol__3.5 电容器的主要参数································································ 44__eol__3.6 电容器的分类······································································ 46__eol__3.7 常用电容器介绍··································································· 46__eol__3.7.1 电解电容器·································································· 46__eol__3.7.2 固体有机介质电容器······················································ 47__eol__3.7.3 固体无机介质电容器······················································ 48__eol__3.7.4 可变电容器·································································· 49__eol__3.7.5 微调电容器·································································· 50__eol__3.8 电容器的选用、代换、检测与修复······································