We have made several improvements to the NIST Josephson FRDC (fast reversed dc) source so that it now operates at 1 Volt. We have made a precision comparison to a conventional semiconductor FRDC source by measuring the thermoelectric transfer difference of a known thermal voltage converter. The agreement between the two sources was measured to be better than 1 part in 10^u7.
Proceedings Title: Proc., Conference on Precision Electromagnetic Measurements (CPEM)
Conference Dates: May 14-19, 2000
Conference Location: Sydney, AS
Pub Type: Conferences
digitaal-to-analog converter, Josephson array, metrology, standard, voltage