对电源“共地”连接仪器测试的数据分析

Data Analysis of Instrument Connected Power in Common GND

在高校实验室,"共地"连接的仪器电源所测出的数据,不一定全部正确,必须对其正确性进行分析,才能获得正确的数据。通过对实例的分析,找出出现数据错误的原因并进行了分析,指出其修正方法和可采取的措施,使数据测量更加准确。实践证明:只有具备一定的专业基础和实践经验,才能辨别数据的真伪。

In the laboratories of the colleges and universities, as the power of instruments connected in common GND, the data from the instruments may not be right completely in the case, and the validity of data must be analyzed. The paper points out the reason for the incorrect datum, and provides the way to amend.