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A precise measurement of QHR at NIM [quantized Hall resistance]

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11 Author(s)
Zhonghua Zhang ; Nat. Inst. of Metrol., Beijing, China ; Wang, D. ; Hu, Z. ; Zhen, J.
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Equipment for precise measurement of the quantized Hall resistance (QHR) at the National Institute of Metrology (NIM), Beijing, China, is described. The essential parts in this equipment are a resistance comparator of one-to-one ratio with a comparison uncertainty of 3×10-8 and two specially designed resistor networks used for determining of the ratio between 12906.4035 Ω of QHR at i=2 and 10 kΩ or 1 kΩ. The transfer procedure from QHR to 10 kΩ or 1 kΩ can be completed easily with this equipment by a few one-to-one comparisons with a total uncertainty of 5×10-8

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Instrumentation and Measurement, IEEE Transactions on  (Volume:40 ,  Issue: 6 )