NPL/BIPM comparison of Josephson voltage standards
- 1 October 1992
- journal article
- Published by IOP Publishing in Measurement Science and Technology
- Vol. 3 (10) , 1011-1013
- https://doi.org/10.1088/0957-0233/3/10/014
Abstract
From 28 to 30 January 1992 measurements were carried out at the National Physical Laboratory (NPL) to compare the 1 V Josephson junction array voltage standard system of the NPL and the Bureau International des Poids et Mesures (BIPM). The voltages produced by the two systems were compared both directly and via a highly stable transfer standard and were found to differ by only (0.7+or-1.3) parts in 1010 (1 sigma type-A uncertainty). Comparisons using commercial Zener diode-based reference standards agreed within the limits imposed by the stability of the Zener standards.Keywords
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