Calibration of mutual inductance standards with a fully-digital impedance bridge
Juan Medved, Alessandro Cultrera, Martina Marzano, Vincenzo D’Elia, Massimo Ortolano, Luca Callegaro · 2025
This work describes a calibration method for mutual inductance standards using the INRIM-POLITO VersICaL fully-digital impedance bridge. Four mutual inductors with nominal values of 10mH, 1mH, 0.5mH, and 0.1mH were measured with both the VersICaL bridge and a commercial LCR metre in the audio frequency range. The measurements carried out with the two methods are reasonably comparable within a preliminary evaluation of the uncertainty. The low frequency behaviour of mutual inductors is relevant for their potential application in the calibration of impedance analysers in the mHz range.