两种测量方法结果为何不同

Why the results of two ways of measurement are different

在戴维南定理实验中．在测量二端网络开路电压时,实验讲义上介绍并要求用两种方法进行测量,但实验发现两种方法测量结果完全不同,其中必然有一种方法错误。本文分析了出现测量错误的原因,并用EWB仿真实验的方法进行了验证,提出了实验时应该注意的问题。

In the experiment of the Law of Th venin, the experiment textbook introduces two ways of measuring the open-circuit voltage of the two-terminal circuit network, The one of the ways must be wrong because the results of two ways are entirely different. This paper analyzes the reason of the wrong, testifies the conclusion using EWB simulation and points out the experiment attention.