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"PTB-INRIM technical assessment of novel digital impedance bridges"

Kolloquium der Abteilung 2

In the JRP EMPIR 18SIB07 GIQS (Graphene impedance quantum standards), PTB's Josephson- and INRIM's electronic-digital impedance bridges have been developed to enable an efficient traceability of impedance quantities. To assess the performance of these novel impedance bridges in the realisation of the unit farad with a mutual validation, INRIM's impedance bridge was moved to PTB in the framework of the EURAMET TC-EM project n. 1501 and the 18SIB07–RMG1. Quantum Hall effect measurements in the AC regime with a graphene-based device developed at PTB were also performed using both bridges. The seminar reports the results of this assessment