摘要
介绍了一种最新研制的接地电阻自动测量仪．该测量仪利用数字逻辑控制由模拟开关和电阻组成的并联电网络，自动调节测量回路中的对地电位，并通过相敏电路检测电位平衡。
This paper presents a new measurer for ground resistance.Using digital logic circuit to control the parallel network of analog switches and resistances ,the voltage to ground is automatically regulated to reach equilibrium tested by phase sensitive circuit,and so the measurer takes an automatic measurement of ground resistance.
出处
《华中师范大学学报（自然科学版）》
CAS
CSCD
北大核心
1997年第1期47-51,共5页
Journal of Central China Normal University：Natural Sciences
关键词
接地电阻
相敏电路
测量仪
电气设备
ground resistance
automatic measurement
analog switch
phase sensitive circuit
