Measurements of 10 V standards using a 1 V Josephson array

A system is described which allows the measurement of 10-V electronic voltage standards using a 1-V Josephson array. A 9:1 potential divider, comprising two 3-k Omega *3-k Omega Hamon resistor networks, in effect converts 1.11 V from the array to 10 V. Following the determination of the effect of power dissipation in the Hamon networks the estimated overall uncertainty (combined 1- sigma type-A and type-B) of a measurement at 10 V is 1.5 parts in 10/sup 8/.<
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