Measurements of the ac-dc difference of a thermal converter have been performed using a Josephson waveform synthesizer and a precision buffer amplifier at frequencies from 10 Hz to 4 kHz, showing agreement with conventional standards of better than 1 µV/V. Also discussed is a method of finding the operating parameters of the programmable Josephson array that correspond to minimal uncertainty.
['O. Seron', 'Ilya Budovsky', 'S. Djordjevic', 'Thomas Hagen', 'Ralf Behr', 'Luis Palafox']
Precision ac-dc transfer measurements with a josephson waveform synthesizer and a buffer amplifier