剪脚...............................................................................................　66

购买剪线工具　...................................................................................................67

电阻和欧姆......................................................................................　67

测量电阻.........................................................................................　68

查看万用表上显示的阻值　....................................................................................68

体验阻值范围　...................................................................................................69

在线查找电阻值................................................................................　69

标记和储存......................................................................................　70

购买元件收纳盒　................................................................................................70

不要操之过急...................................................................................　71

第　10 章 LED................................................................72

了解　LED 的特性..............................................................................　72

LED　的尺寸 .....................................................................................................72

LED　的形状 .....................................................................................................73

LED　的镜头透明度 ............................................................................................74

LED　的可视角 ..................................................................................................74

LED　的颜色 .....................................................................................................75

LED　的亮度 .....................................................................................................76

LED　的效率 .....................................................................................................76

超近距离观察　LED............................................................................　77

认识多色　LED..................................................................................　78

双色　LED ........................................................................................................78

三色或三态　LED ...............................................................................................78

全彩　LED ........................................................................................................78

测试　LED........................................................................................　79

设定万用表的二极管模式　....................................................................................79

分析　LED 测试结果 ...........................................................................................79

元件混装包......................................................................................　81

点灯上路.........................................................................................　82

搭建和测试电源指示电路　....................................................................................83

什么是元件列表................................................................................　83

第　11 章 供电.................................................................83

查看电路图　......................................................................................................84

电源指示电路...................................................................................　84

看见亮光了吗？　................................................................................................85

测试电源指示电路　.............................................................................................85

熟悉每个元件的功能..........................................................................　86

测量电源指示电路.............................................................................　86

测量在线电压　...................................................................................................86

测量电流　..........................................................................................................89

计算电池寿命　...................................................................................................90

不要把表笔插在电流端子上测量电压　....................................................................92

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