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- Title
Precision high-value resistance scaling with a two-terminal cryogenic current comparator.
- Authors
Hernandez-Marquez, F L; Bierzychudek, M E; Jones, G R, Jr; Elmquist, R E
- Abstract
We describe a cryogenic two-terminal high-resistance bridge and its application in precision resistance scaling from the quantized Hall resistance (QHR) at RH = RK/2 = 12 906.4035 Ω to decade resistance standards with values between 1 MΩ and 1 GΩ. The design minimizes lead resistance errors with multiterminal connections to the QHR device. A single variable voltage source and resistive ratio windings are utilized to achieve excellent dynamic stability, which is not readily obtained in low-current measurements with conventional cryogenic current comparators (CCCs). Prototypes of this bridge have been verified by a successful international comparison of high-resistance scaling using two-terminal CCCs in the national metrology institutes of Argentina, Mexico, and the United States.
- Publication
The Review of scientific instruments, 2014, Vol 85, Issue 4, p044701
- ISSN
1089-7623
- Publication type
Journal Article
- DOI
10.1063/1.4869240