Improvements in a Method to Characterize Soft Ferrites up to High Frequencies

This paper shows a low-cost and easy to use measurement method for characterizing magnetic material B(H) relation up to medium frequencies providing an acceptable overall accuracy of the acquired data. Saturation fields at MHz frequencies are obtained through resonance effects of properly designed circuit. Simulations and measurements are presented and discussed showing the flexibility of the method and the possibility to use it for a complete characterization of the magnetic cores. Discussions and possible extension to rotating field measurements are reported