天气预报 > 其他 > 如何自制电灯
如何自制电灯
更新时间: 2020-09-24 00:00:00  

1、寻找1小段细玻璃管、细钨丝和两根细导丝;

2、切割钨丝、导丝、玻璃管成合适的长度,钨丝的2端缠在两根导丝,放入细玻璃管;

3、用酒精喷灯把玻璃管的两端烧在一起,把玻璃管里面抽成真空,把导丝的两端露出来;

4、用可调电源接在导丝两端,测试一下灯泡的发光电压。

关键词: 如何 自制 电灯

如何自制电灯相关经验

天气预报

最新推荐

页面:/news/view-158533/ | 耗时:0.6277 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=158533 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=158533 LIMIT 0,1
select * from tbl_Articles_sphinx where id=158533 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(672146,602825,1078903,109340,625713,110108,113599,1379287,2563962,2116866,3157971,110965,120096,1095850,842764,2259921,109203,1130844,153915,1650490,1470437,3408804,1621822,1062566,2362665,108690,2243586,396878,2165101,109434) ORDER BY field (ArticleID,672146,602825,1078903,109340,625713,110108,113599,1379287,2563962,2116866,3157971,110965,120096,1095850,842764,2259921,109203,1130844,153915,1650490,1470437,3408804,1621822,1062566,2362665,108690,2243586,396878,2165101,109434)