Title :
New group resistance standards
Author :
Litvinov, B. ; Ploshinsky, A. ; Semyonov, Y.
Author_Institution :
Inst. for Metrol., Acad. of Sci., St. Petersburg, Russia
Abstract :
The standards are based on the groups of metal-foil resistors connected by four-terminal junctions. Their values are chosen approximately in the middle of the range where the most accurate measurements are made in practice. In manufacturing, the connection error is reduced by the method of virtual currents. The stability of resistors determines the value of standards with an error of about 0.02 ppm during 6 months between their measurements using the QHR, The new 1 Ohm group standard may be used for direct link between the voltage of 1 V and the current of 1 A.
Keywords :
Calibration; Electric resistance measurement; Quantum Hall effect; Resistors; Transfer standards; 1 ohm; dual transition; four-terminal junctions; group resistance standards; metal-foil resistors; quantum Hall resistance; reduced connection error; resistor stability; unit maintenance; virtual currents method; Current measurement; Electric resistance; Electrical resistance measurement; Manufacturing; Measurement standards; Metrology; Resistors; Size measurement; Stability; Voltage measurement;
Conference_Titel :
Precision Electromagnetic Measurements Digest, 2000 Conference on
Conference_Location :
Sydney, NSW, Australia
Print_ISBN :
0-7803-5744-2
DOI :
10.1109/CPEM.2000.850899
