VI-Characterization of Soft Magnetic Materials by driving Current or Voltage

Abstract

We analyse the volt-amperometric (VI-) method for the characterization of minor loops of soft magnetic materials. By adopting several input signals and by operating at various frequencies in the 10 Hz 10 kHz frequency range, we perform the measurement on a soft ferrite core. Through the use of two different measurement schemes, we control in the first case the voltage across and in the second case the current through the primary coil. Measurement results are reported and a comparison among the various techniques is provided throughout the paper.