Direct calibration of a true-rms ac voltmeter against a He-free pulsed Josephson standard

• Published in: Measurement : journal of the International Measurement Confederation Vol. 236; p. 114981
• Main Authors: Kubiczek, Krzysztof, Durandetto, Paolo, Capra, Pier Paolo, Francese, Claudio, Lanzillotti, Marco, Roncaglione, Luca, Kampik, Marian, Sosso, Andrea
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 15.08.2024
• Subjects: Josephson arbitrary waveform standard; Quantum metrology; Thermal voltage converter; True-rms voltage calibration; Thermal voltage converter; True-rms voltage calibration; Josephson arbitrary waveform standard; Quantum metrology

Starting from 2019 a new central role is played by quantum standards, owing to the redefined SI, where electrical units are directly linked to the fundamental constants e (elementary charge) and h (Planck constant). Thus, metrologists are nowadays trying to extend the astonishing accuracy attainable...