Patent ID: 6270592
Filing Date: 2001-08-07
Classification: H01F

Abstract:
in area ratio of which being fine crystalline particles having an average particle size of 100 nm or less, said magnetic core having, when measured at a core temperature of 25.degree. C. using a 50 kHz monopolar rectangular voltage with an on-duty ratio of 0.5, control magnetizing properties of:0.12 T or less of a residual operating magnetic flux density .DELTA.Bb;2.0 T or more of a total control operating magnetic flux density .DELTA.Br; and0.10-0.20 T/(A/m) of a total control gain Gr calculated by the equation:Gr=0.8.times.(.DELTA.Br-.DELTA.Bb)/Hr wherein Hr is a total control magnetizing force defined as a control magnetizing force corresponding to 0.