【摘要】 介绍一种基于 AD7705和 ATMega8的新型接地电阻测试装置，分析该接地电阻测 试装置的设计原理，详细地说明系统的软硬件设计方法，并创造性地提出利用恒流源来构成系统 的采样电路。更多还原

【Abstract】 Keywords A new-type grounding resistance measuring system based on IC AD7705 and IC Mega8 is introduced,and its working principle is illustrated in detail.Further the design method of hardware and software is given.Meanwhile,the constant-currant power which is used to the sample system is al- so creatively proposed.更多还原