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HIGH RESISTANCE SCALING FROM 10 k(OHM) AND QHR STANDARDS USING A CRYOGENIC CURRENT COMPARATOR

Published

Author(s)

Randolph Elmquist, George R. Jones Jr., Brian J. Pritchard, Marcos E. Bierzychudek, Felipe L. Hernandez

Abstract

We describe a cryogenic current comparator (CCC) bridge for resistance scaling that provides improved measurement uncertainty over a range of resistance values from 100 k(Ω) to 1 G(Ω). This CCC is designed for high resistance scaling based directly on a quantized Hall resistance (QHR) standard as well as comparisons of resistance ratios of 1, 10 and 100. The QHR-to-decade-value winding ratio offset is chosen so as to approximately cancel the offsets produced by resistive decade windings.
Proceedings Title
CPEM-2008 Conference Digest
Report Number
32872
Conference Dates
June 8-15, 2008
Conference Location
Broomfield, CO, USA
Conference Title
2008 Conference on Precision Electromagnetic Measurements

Keywords

electrical resistance, quantized Hall resistance, cryogenic current comparator, high resistance

Citation

Elmquist, R. , Jones Jr., G. , Pritchard, B. , Bierzychudek, M. and Hernandez, F. (2008), HIGH RESISTANCE SCALING FROM 10 k(OHM) AND QHR STANDARDS USING A CRYOGENIC CURRENT COMPARATOR, CPEM-2008 Conference Digest, Broomfield, CO, USA, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=32872 (Accessed April 16, 2024)
Created May 31, 2008, Updated October 12, 2021