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发明名称
无电源式声响、闪光测电笔
摘要
本实用新型测电装置无工作电源而能发出声响和闪光。它利用被测电源向压电陶片的自身电容充电,当充电电压上升到氖泡的启辉电压时,与压电陶片并联的氖泡启辉放电。充放电往返循环,压电陶片和氖泡发出周期的声响和闪光。测试者可从声响、闪光周期的长短判断被测电压的高低和自身与地绝缘强度的大小。
申请公布号
CN87200947U
申请公布日期
1988.02.03
申请号
CN87200947
申请日期
1987.01.20
申请人
丁力;杨启高
发明人
丁力;杨启高
分类号
G01R19/155
主分类号
G01R19/155
代理机构
代理人
主权项
1、一种声光显示测电笔,该装置有金属测试触头(1)、绝缘外壳(2)、氖泡(6)、压电陶片(9)、限流电阻(8)和手触电极(10),其特征在于氖泡(6)和压电陶片(9)并联后,与整流二极管(4)和整流二极管(5)正向串联组成闭合回路,在此之内,整流二极管(4)和整流二极(5)正向串联的连接点接金属测试触头,使测试电路能与被测电源相通,限流电阻(8)的一端与并联的氖泡(6),压电陶片(9)的任意一端相连接,限流电阻(8)的另一端与手触电极(10)相连接。
地址
湖南省湘潭市13号信箱
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