天气预报 > 其他 > 如何用万用表测量电线的电阻
如何用万用表测量电线的电阻
更新时间: 2020-09-16 00:00:00  

1、零位调整:将选择开关置于R乘100档,将两表笔短接调整欧姆档零位调整旋钮,使表针指向电阻刻度线右端的零位。若指针无法调到零点,说明表内电池电压不足,应更换电池;

2、倍率:用两表笔分别接触被测电阻两引脚进行测量,正确读出指针所指电阻的数值,再乘以倍率就是被测电阻的阻值;

3、读表值:为使测量较为准确,测量时应使指针指在刻度线中心位置附近。若指针偏角较小,应换用R乘1000档,若指针偏角较大,应换用R乘10档或R乘1档,每次换档后,应再次调整欧姆档零位调整旋钮,然后再测量;

4、关闭表:测量结束后,拔出表笔,将选择开关置于OFF档或交流电压最大档位,收好万用表。

关键词: 何用 测量 电线 电阻

如何用万用表测量电线的电阻相关经验

天气预报

最新推荐

页面:/news/view-2943538/ | 耗时:0.4525 s | 内存:2.11 MB | 查询:4 | 缓存读取:3 写入:0 | 加载文件:25
select * from tbl_Articles WHERE ArticleID=2943538 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=2943538 LIMIT 0,1
select * from tbl_Articles_sphinx where id=2943538 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1045867,1124945,1063867,1068708,1069221,1105697,1099791,1103895,1091362,1087485,1073503,1050051,1088628,1086582,1070038,1106994,1108724,1112384,1064453,1104657,1096653,1112160,1049670,1057383,1078903,1084197,1103602,1084307,1098389,1100575) ORDER BY field (ArticleID,1045867,1124945,1063867,1068708,1069221,1105697,1099791,1103895,1091362,1087485,1073503,1050051,1088628,1086582,1070038,1106994,1108724,1112384,1064453,1104657,1096653,1112160,1049670,1057383,1078903,1084197,1103602,1084307,1098389,1100575)