用箱式电位差计测电阻的4种方法  

Four Method in Measureing Electric Resistance with Box-type Potentiometer

作　　者：刘永萍[1] 辛言君[2] 袁淑立[1] 于桂凤[1] 

机构地区：[1]青岛农业大学理学院,山东青岛266109 [2]青岛农业大学资环学院,山东青岛266109

出　　处：《实验科学与技术》2008年第3期29-30,共2页Experiment Science and Technology

基　　金：高等农业院校大学物理课程与信息技术的整合及实践(校级教研项目2007)

摘　　要：电位差计实验是利用电压补偿的方法测电压的经典实验。文章尝试用电位差计的方法测量电阻,充分利用测电压的实验仪器将其重新组合,用电压补偿法原理设计了4种不同的电路,并对其操作性、精确度、测量范围等方面进行了对比,分析了各电路的优劣和适用范围。该实验充分展示了电位差计测量电阻的灵活性,是进行设计性实验的良好教材。The experiment of potential difference meter is a classical experiment which adopts the method of voltage compensation. The method of measuring electric resistance with box-type potentiometer is introduced in the paper. Four variant circuits are designed which are compared in serviecability, influencing factor and applicability. This experiment shows that box-type potentiometer method has strong flexibility and can be a good choice for design-oriented experiment.

关 键 词：箱式电位差计 电阻 标准电池 检流计 

分 类 号：TM930.12[电气工程—电力电子与电力传动]