Decreasing the granularity of magneticpowder can increase the quality factor of magneticpowdercore.
随着磁粉粒度的减小，磁粉芯品质因数增大。
2
Increasing the granularity of magneticpowder and shaping pressure can increase the permeability of magneticpowdercore.
随着磁粉粒度及成型压力的增大，磁粉芯的磁导率增大。
3
High voltage simulation tests were performed on the magnetic rings of three kind materials, i. e. ferrite, amorphous and microcrystalline and metallic magneticpowdercore.