Computer Aided Magnetic Measurements of Soft Magnetic Materials

Abstract

The paper presents some experiments that have been carried out on toroidal cores on which two coils have been wound. In the primary coil, a current of the desired waveform was introduced, and at the terminals of the secondary coil, another voltage proportional to the time derivative of the magnetic flux density was acquired. At the terminals of a resistance inserted in the primary circuit, a voltage is acquired, proportional to the supply current and, respectively, to the magnetic field strength. From acquired voltages, it was possible, after a certain arithmetic calculus, to draw the hysteresis cycle.