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AC Voltage Measurements to 120 V with a Josephson Arbitrary Waveform Synthesizer and an Inductive Voltage Divider

Published

Author(s)

Dimitrios Georgakopoulos, Ilya Budovsky, Samuel P. Benz

Abstract

We have developed a system to extend, by a factor of up to 1000, the voltage range over which Josephson arbitrary waveform synthesizers (JAWS) can be used in ac voltage metrology. The system is based on a precision inductive voltage divider, with a lock-in amplifier as the detector. Using a JAWS with a maximum output voltage of 250 mV rms, we have made accurate voltage measurements up to 120 V, at frequencies from 60 Hz to 1000 Hz, with uncertainties of no more than a few microvolts per volt. We anticipate that our JAWS-based system will improve uncertainties in ac voltage metrology by one order of magnitude compared to techniques based on thermal voltage converters.
Citation
IEEE Transactions on Instrumentation and Measurement
Volume
68
Issue
6

Keywords

Inductive voltage divider, Josephson junction, measurement standards, measurement techniques, quantum voltage standards
Created December 17, 2018, Updated May 13, 2019