Patent ID: 6744342
Filing Date: 2004-06-01
Classification: H01F

Abstract:
A high performance, low core loss bulk magnetic component comprising a plurality of substantially similarly shaped layers of crystalline, ferromagnetic metal strips adhesively bonded together by an adhesive bonding means to form a laminated polyhedrally shaped part, wherein the ferromagnetic metal strips include an iron-base alloy containing 4-11 weight percent Si, and wherein said magnetic component when operated at an excitation frequency â€œfâ€  to a peak induction level Bmax has a core-loss less than â€œLâ€  wherein L is given by the formula L=0.0135 f(Bmax)1.9+0.000108 f1.6 (Bmax)1.92, said core loss, said excitation frequency and said peak induction level being measured in watts per kilogram, hertz, and teslas, respectively.