天气预报 > 其他 > 充电手电筒的电池如何确定正负极
充电手电筒的电池如何确定正负极
更新时间: 2020-07-12 00:00:00  

1、看接线,如果联线未拆掉,那么一般红线是正极。

2、如果接线分不出,电池尚有极少量余电的情况下,用万能表量电压即可知道,表针反弹或数显为负数的,则黑表笔为正,相反为负。

3、用手机的万能充,稍微充一下,然后用万能表量电压。

关键词: 充电 手电筒 电池 如何 确定 负极

充电手电筒的电池如何确定正负极相关经验

天气预报

最新推荐

页面:/news/view-2392915/ | 耗时:0.3508 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=2392915 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=2392915 LIMIT 0,1
select * from tbl_Articles_sphinx where id=2392915 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1113471,1048110,1112032,1123835,1106308,1095011,1063181,1086348,1111930,1069335,1097505,1089522,1095850,1047827,1044565,1107160,1049046,1090699,1111326,1101115,1097667,1055920,1104657,1055718,1102470,1095928,1046963,1076029,1057595,1048422) ORDER BY field (ArticleID,1113471,1048110,1112032,1123835,1106308,1095011,1063181,1086348,1111930,1069335,1097505,1089522,1095850,1047827,1044565,1107160,1049046,1090699,1111326,1101115,1097667,1055920,1104657,1055718,1102470,1095928,1046963,1076029,1057595,1048422)