试述元器件识别与测试论文

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1、试述元器件识别与测试论文试述元器件识别与测试论文导读：国家职业资格鉴定论文题目：姓名：身份证号：准考证号：联系：培训单位：鉴定单位：论文（国家职业资格）2014年月日目录1.摘要关键词············································12.题目····················································23.引言····················································24

2、.万用表··················································24.1万用表的基本概念·····················································24.2万用表的使用························································25.电阻····················································45.1电阻的定义·

3、··························································45.2电阻的识别方法·······················································46.电容····················································56.1电容的定义及分类·····················································56.2电容

4、的计算及识别方法·················································57.二极管··················································67.1二极管的分类·························································67.2二极管的使用方法·····················································68.三极管·

5、···············································78.1三极管的分类·························································78.2三极管的使用方法·····················································79.元器件的功能测试·······································79.1电阻的功能测试············

6、··········································79.2电容的功能测试·······················································79.3二极管的功能测试·····················································89.4三极管的功能测试·····················································810.结论········

7、··········································811.试述元器件识别与测试论文(2)导读：能测试三极管的测试方法：三极管用二极管档测。红笔放在B级黑笔依次测C级和E极。若两次都是显示为无穷大“1”为PNP型三极管。若显示的阻值为几百欧姆为NPN型三极管。以NPN型为例：红笔接基极，黑笔依次测C级和E极，若一次为“0”或一次为无穷大“1”或一次为几百欧姆。则坏。若两次测得的阻值都为“0”或无穷大。则坏。两次都为兆欧（MΩ）。电阻5.2电阻的识别方法黑，棕，红，橙，

8、黄，绿，蓝，紫，灰，白，金，银0，1，2，3，4，5，6，7，8，9，5%，10%倒数第二环，表示零的个数。最后一位，表示误差。这个规律有一个巧记的口诀：棕一红二橙是三，四黄五绿六为蓝，七紫八灰九对白，黑是零，金五银十表误差。电阻阻值计算表色环电阻分四环和五环。1.四色环电阻：就是指用四条色环表示阻值的电阻，从左向右数，第一道色环表示阻值的最大一位数字；第二道色环表示阻值的第二位数字；第三道色环表示阻值倍乘的数；第四道色环表示阻值允许的偏差（精度）。例如一个电阻的第一