Current dependence coefficient determination for different DC standard resistors measurements based on Ⅴ-Ⅰ method  

基于伏-安法测量不同直流标准电阻器的电流依赖性参数（英文）

作　　者：Rasha S M Ali M Helmy A Raouf Rasha S M Ali M Helmy A Raouf(Department of Electrical Quantities Metrology,National Institute for Standards (NIS),Giza 12211-136,Egypt)

机构地区：Department of Electrical Quantities Metrology,National Institute for Standards （NIS）,Giza 12211-136 Egypt

出　　处：《Journal of Measurement Science and Instrumentation》2016年第4期332-335,共4页测试科学与仪器（英文版）

摘　　要：Current dependence and stability of the measured resistance value are very important for the accurate measurement of DC standard resistor. In this paper, the volt-ampere （V-I） measurement method has been applied to study the current depend-ence of four different types of standard resistors. Diverse values are obtained through the investigation of their stability at dif-ferent currents. Therefore, the current dependence coefficient （CDC） can be determined for each one of the studied resistors. Research shows CDC depends on the applied current value, the measurement time and the resistor type, as clearly demonstra-ted in this research.

关 键 词：current dependence coefficient standard resistors volt-ampere method resistor stability 

分 类 号：TM934.12[电气工程—电力电子与电力传动]