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This work presents an improved and much more flexible setup of the dual Josephson voltage standard potentiometer. It can be used for high precision arbitrary resistance ratio measurements. For this purpose a 18 channel DAC based current source was developed to control all segments of binary divided 1-V Josephson voltage standard arrays. Additionally different types of current sources to generate the...
Josephson series arrays have been operated as digital-to-analog converters with fundamental accuracy to generate precision waveforms with accuracies better than one part in 107 at power frequencies. These waveforms have been used in the past to calibrate the sampling voltmeter in the primary standard for electrical power at the Physikalisch-Technische Bundesanstalt (PTB). The present contribution...
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