Analysis of Eddy Current Loss in Mn-Zn Ferrites for Power Supplies

摘要

Power loss in Mn-Zn ferrites was expressed as hysteresis loss, eddy current loss and residual loss. T_(min) at which hysteresis loss was minimum, was found correlated to secondary peak temperature of initial permeability. Power loss could be expressed in terms of hysteresis loss, resistivity dependent loss and resistivity independent loss. Residual loss was thus concluded to be that of the independency of resistivity.