This paper deals with the experimental analysis of the hysteresis behaviour
of magnetic cores. Either laminated iron cores, or soft ferrite cores are
taken into account in the paper. The series of major loops and the related
virgin curves have been measured at appropriate very low frequencies for ea
ch type of magnetic material, in order to have data with negligible dynamic
effects. These data have been used to determine the Preisach distribution
functions for each material, as described either in the classical preisach
scalar model (CSPM) or in a modified product model, and some notes and comm
ents about the shapes found are given. (C) 2000 Elsevier Science B.V. All r
ights reserved.