Title :
Voltage injection type high ohm resistance bridge
Author :
Oe, T. ; Kinoshita, J. ; Kaneko, N.
Author_Institution :
Nat. Metrol. Inst. of Japan (NMIJ), Tsukuba, Japan
Abstract :
We propose a modified Wheatstone bridge for the high-value resistance measurement from 1 MΩ to 1 TΩ. In this system, single voltage source and a resistance voltage divider are used instead of dual DC voltage sources. This bridge has the additional voltage source, which injects voltage to the neutral point of the bridge to achieve balance. This new voltage injection type Wheatstone bridge can calibrate a 1 TΩ resistor with an uncertainty of 23 μΩ/Ω.
Keywords :
electric resistance measurement; voltage dividers; bridge neutral point; dual DC voltage sources; high ohm resistance bridge; high-value resistance measurement; modified Wheatstone bridge; resistance 1 Mohm to 1 Tohm; resistance voltage divider; single voltage source; voltage injection; Bridge circuits; Calibration; Electrical resistance measurement; Resistance; Resistors; Uncertainty; Voltage measurement; DC Resistance standards; High-value resistance measurement; Modified Wheatstone bridge; Resistance voltage divider;
Conference_Titel :
Precision Electromagnetic Measurements (CPEM), 2012 Conference on
Conference_Location :
Washington, DC
Print_ISBN :
978-1-4673-0439-9
DOI :
10.1109/CPEM.2012.6250951
