Air Core Inductance <\/b>– L<\/span>o <\/span>(henry)\u00a0<\/span><\/span><\/p>\n The inductance that would be measured if the core had unity permeability and the flux distribution remained unaltered.\u00a0<\/span><\/p>\n Coercive Force <\/b>– H<\/span>c <\/span>(oersted or A\/m)\u00a0<\/span><\/span><\/p>\n The magnetized field strength required to bring the magnetic flux density of the magnetized material to zero.\u00a0<\/span><\/p>\n Core Constant <\/b>\u2013 C<\/span>1 <\/span>(cm<\/span>-1<\/span>)\u00a0<\/span><\/span><\/p>\n The summation of the magnetic path lengths of each section of a magnetic circuit divided by the corresponding magnetic area of the same section.\u00a0<\/span><\/p>\n Core Constant <\/b>\u2013 C<\/span>2 <\/span>(cm<\/span>-3<\/span>)<\/span><\/span><\/p>\n The summation of the magnetic path lengths of each section of a magnetic circuit divided by the corresponding magnetic area of the same section.\u00a0<\/span><\/p>\n Curie Temperature <\/b>– T<\/span>c <\/span>(<\/span>o<\/span>C)<\/span><\/span><\/p>\n The transition temperature above which a ferrite loses its ferromagnetic properties.\u00a0<\/span><\/p>\n Disaccommodation <\/b>\u2013 D<\/span><\/span><\/p>\n The proportional decrease of permeability after a disturbance of magnetic material, measured at constant temperature, over a given time interval.\u00a0<\/span><\/p>\n Disaccommodation Factor <\/b>\u2013 DF<\/span><\/span><\/p>\n The disaccommodation factor is the disaccommodation after magnetic conditioning divided by the permeability of the first measurement times log<\/span>10<\/span> of the ratio of time intervals.\u00a0<\/span><\/span><\/p>\n Effective Dimensions of a Magnetic Circuit <\/b>\u2013\u00a0<\/span><\/span><\/p>\n Area A<\/span>e <\/span>(cm<\/span>2<\/span>), Path Length <\/span>l<\/span>e <\/span>(cm), and volume V<\/span>e<\/span> (cm<\/span>3<\/span>)\u00a0<\/span><\/span><\/p>\n For a magnetic core of given geometry, the magnetic path length, the cross sectional area, and the volume that a hypothetical toroidal core of the same material properties should possess to be the magnetic equivalent to the given core.\u00a0<\/span><\/p>\n Field Strength <\/b>\u2013 H (oersted or A\/m)<\/span><\/span><\/p>\n The parameter characterizing the amplitude of the alternating field strength.\u00a0<\/span><\/p>\n Flux Density <\/b>\u2013 B (gauss or mT)<\/span><\/span><\/p>\n The corresponding parameter for the induced magnetic field in an area perpendicular to the flux path.\u00a0<\/span><\/p>\n Flux Density, saturation <\/b>\u2013 B<\/span>s<\/span> (gauss or mT)<\/span><\/span><\/p>\n The maximum intrinsic induction possible in a material.\u00a0<\/span><\/p>\n Inductance Factor <\/b>\u2013 A<\/span>L<\/span> (nH)<\/span><\/span><\/p>\n Inductance of a coil on a specified core divided by the square of the number of turns. Unless otherwise specified, the inductance test conditions for the inductance factor are at flux density < 10 gauss.<\/span><\/p>\n Loss Factor <\/b>\u2013 tan \u03b4 \/ \u03bc<\/span>i\u00a0<\/span><\/span><\/p>\n The phase of displacement between the fundamental components of the flux density and the field strength divided by the initial permeability.\u00a0<\/span><\/p>\n Magnetic Constant <\/b>\u2013 \u03bc<\/span>o<\/span><\/span><\/p>\n The permeability of free space. \u00b5<\/span>0 <\/span>= 4\u03c0\u00a0\u00d7\u00a010\u22127 H\u00b7cm<\/span><\/span><\/p>\n Magnetic Hysteresis <\/b>\u2013\u00a0<\/span><\/span><\/p>\n In the magnetic material, the magnetization charge present in the material causing an offset in the B-H loop as a result of this \u2018memory\u2019 effect.<\/span><\/p>\n Magnetically Soft Material <\/b>\u2013\u00a0<\/span><\/span><\/p>\n A magnetic material with low coercivity. A material which holds little or no residual magnetic charge.<\/span><\/p>\n Permeability, amplitude <\/b>– <\/span>u<\/b>\u0394<\/b><\/span><\/p>\n The quotient of the peak value of the flux density and the peak value of the applied field strength at a stated amplitude of either, with no static present.\u00a0<\/span><\/p>\n Permeability, complex series <\/b>\u2013 \u03bc<\/span>s<\/span>\u2019, \u03bc<\/span>s<\/span>\u201d<\/span><\/span><\/p>\n The real and imaginary components respectively of the complex permeability expressed in series terms.\u00a0<\/span><\/p>\n Permeability, effective <\/b>– \u03bc<\/span>e\u00a0<\/span><\/span><\/p>\n For a magnetic circuit constructed with an air gap or air gaps, the permeability of a hypothetical homogeneous material which would provide the same reluctance.\u00a0<\/span><\/p>\n Permeability, incremental <\/b>– \u03bc<\/span>\u0394<\/span><\/span><\/p>\n Under stated conditions the permeability obtained from the ratio of the flux density and the applied field strength of an alternating field and a superimposed static field.\u00a0<\/span><\/p>\n Permeability, initial <\/b>– \u03bc<\/span>i<\/span><\/span><\/p>\n The permeability obtained from the ratio of the flux density, kept at < 10 gauss, and the required applied field strength. Material initially in a specified neutralized state.\u00a0<\/span><\/p>\n Power Loss Density <\/b>\u2013 P (mW\/cm<\/span>3<\/span>)<\/span><\/span><\/p>\n The power absorbed by a body of ferromagnetic material and dissipated as heat, when the body is subject to an alternating field which results in a measurable temperature rise. The total loss is divided by the volume of the body.\u00a0<\/span><\/p>\n Remanence <\/b>\u2013 B<\/span>r<\/span> (gauss or mT)\u00a0<\/span><\/span><\/p>\n The flux density remaining in a magnetic material when the applied magnetic field strength is reduced to zero.\u00a0<\/span><\/p>\n Temperature Coefficient <\/b>\u2013 TC<\/span><\/span><\/p>\n The relative change of the quantity considered, divided by the difference in the temperatures producing it.\u00a0<\/span><\/p>\n Temperature Factor <\/b>\u2013 TF\u00a0<\/span><\/span><\/p>\n The fractional change in the initial permeability over temperature range, divided by the initial permeability.\u00a0<\/span><\/p>\n<\/div>
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