A low-cost hysteresigraph for plotting magnetization curve and characterizing of toroidal ferromagnetic cores using a new mathematical modeling

Ferromagnetic materials are characterized by magnetic dipoles that align themselves to the direction of an applied external magnetic field showing high and positive values of magnetic susceptibility. Many magnetic-based measurement devices are based on the ferromagnetic properties of its constituent materials and the proper magnetic characterization of these materials is essential. A hysteresigraph is an instrument for measuring hysteresis loops as a function of frequency and magnetic field, but, in general, it is very expensive. Thus, this paper presents a low-cost hysteresigraph for plotting hysteresis loops and magnetization curve of toroidal ferromagnetic cores in real time. The proposed hysteresigraph uses common instruments present in universities or research laboratories and a new simple mathematical modeling to obtain the magnetic properties (permeability, residual density and coercivity, for example) and magnetization curve.