A new method for fast and efficient magnetic selection of hard Ferrites

A new method for fast and efficient magnetic selection of hard ferrites is described in which a procedure of magnetization with transient periodical oscillations (MTPO) is used. This method was evaluated during the determination of remanent induction B
r
and coercive force
B
H
c
of hard ferrites. The equivalent circuit of an instrument for magnetization, measuring, selection, and demagnetization (MMSD) using the MTPO procedure also is given.