Abstract
Co-rich amorphous magnetic cores exhibit high gain and low noise in the high frequency range. However, flux resetting characteristics have not been studied in this region. In this paper, we report the Control Magnetization Curves (CMC) of amorphous magnetic cores in a 1 kHz-200 kHz frequency region.
At f=200kHz, amorphous small cores with toroidal shape exhibited high gain and high reset flux density as compared with Mn-Zn ferrite small core.
The characteristics of the amorphous ring cores in the proportional region of the reset characteristics was independent of exciting frequencies from 50 Hz up to 50 kHz. Core noise of the ring cores is much smaller than that of the toroidal cores which have the same composition.
