Title :
High resistance measurement at NIM
Author :
Shao Haiming ; Liang Bo ; Dai Kenan ; Wang Hao ; Wu Hao
Author_Institution :
Nat. Inst. of Metrol., Beijing, China
Abstract :
An automatic ratio bridge based on BVD is used to take measurement up to 1 G/spl Omega/ at NIM. Adopting a "Virtual Null" mode efficiently reduces effects of insulation of bridge and offset current of detector. The measurement of a 100 M/spl Omega/ Hamon resistor shows an agreement of 1 parts in 10/sup 6/ at ratio 1 G/spl Omega/:100 M/spl Omega/.
Keywords :
bridge instruments; calibration; electric resistance measurement; measurement standards; resistors; 1 G/spl Omega/:100 M/spl Omega/; 1 Gohm; 100 M/spl Omega/ Hamon resistor; 100 Mohm; BVD; NIM; Virtual Null mode; automatic ratio bridge; insulation; offset current; Bridge circuits; Detectors; Electrical resistance measurement; Equivalent circuits; Insulation; Metrology; Q measurement; Resistors; Switches; Voltage;
Conference_Titel :
Precision Electromagnetic Measurements Digest, 2000 Conference on
Conference_Location :
Sydney, NSW, Australia
Print_ISBN :
0-7803-5744-2
DOI :
10.1109/CPEM.2000.850994
