FIELD: electricity.
SUBSTANCE: invention relates to a powder magnetic core for operation at high frequencies produced by stamping of an iron-based magnetic powder coated with an insulation film, with specific resistance of less than 1000; preferably below 2000; and most preferably below 3000 mcOhm·m, magnetic induction of saturation B above 1.5, preferably higher than 1.7; and most preferably higher than 1.9 T. The invention also relates to manufacturing of such cores, and also to a powder suitable for such manufacturing.
EFFECT: reduced losses for vortex currents, maintenance of low level of losses for hysteresis, increased specific electric resistance of magnetic cores is a technical result of the invention.
11 cl, 2 tbl, 2 ex
