A CCC resistance bridge for the range 10 k(OMEGA) to 1 G(OMEGA)

摘要

This paper describes a new resistance bridge to provide improved traceability for resistance measurements at NPL in the range 10 k(OMEGA) to 1 G(OMEGA). The provision of ratio measurements by a cryogenic current comparator (CCC) rather than the traditional method using Hamon ratio devices should improve the uncertainties for values up to 1 G(OMEGA) by an order of magnitude.