A Comparison Between Square-Loop Metals and Ferrites for High-Speed Pulsed Operation

Abstract

Metals and ferrites with rectangular hysteresis loops are used in magnetic amplifiers, switching networks, and data-storage systems. In these applications, the large-signal pulse response is most important. To reduce the effect of eddy currents, metals have been rolled to ultra-thin gage and high-resistivity ferrites have been used. By these techniques, eddy currents have been reduced to the point where relaxation effects limit the response time in both cases.