Hysteresisgraph with discontinuous sweep mode

The present paper describes a system which permits the tracing of hysteresis loops of magnetic materials submitted to a “sequential” magnetizing field. Based on sampling techniques the set-up provides, in addition to the well-known capability of tracing ac loops on an X-Y recorder, the possibility to reduce drastically the heat dissipation. Moreover, the sequential mode of operation permits the direct tracing of some interesting curves, such as the initial magnetization curve, to be easily carried out.