Title :
High precision measurement of the load effect of the resistor
Author :
Lan, J. ; Zhang, Zhenhao ; Li, Zuyi ; He, Qian ; Han, Bo ; Li, S. ; Wang, G.
Author_Institution :
Dept. of Electr. Eng., Tsinghua Univ., Beijing, China
Abstract :
The load effect of the resistor should be paid great attention for the precise measurement. Here a high accurate resistance voltage divider (RVD) used to precisely measure the load effect of the resistor is provided. A self-calibrated standard resistor at 100Ω with zero load effect is employed as one arm of the bridge, and several stable resistors with the same temperature coefficient and structure are connected in series as the accurate ratio free from the load effect. In contract to the direct current comparator (DCC), the load effect of the high resistance can be measured due to the low current requirement of the standard resistor. Several experiments have been finished to evaluate the resistance voltage divider and some results are presented here.
Keywords :
calibration; electric resistance measurement; resistors; voltage dividers; DCC; RVD; direct current comparator; high precision measurement; resistance 100 ohm; resistance voltage divider; resistor load effect measurement; self-calibrated standard; temperature coefficient; temperature structure; Bridge circuits; Current measurement; Electrical resistance measurement; Resistance; Resistors; Temperature measurement; Voltage measurement; Load effect; direct current comparator; low noise amplifier; resistance divider; temperature coefficient;
Conference_Titel :
Precision Electromagnetic Measurements (CPEM), 2012 Conference on
Conference_Location :
Washington, DC
Print_ISBN :
978-1-4673-0439-9
DOI :
10.1109/CPEM.2012.6250962
