MAGNETIC CORE Russian patent published in 1998 - IPC

FIELD: electrical engineering; transformers, saturable reactors, and miscellaneous magnetic components. SUBSTANCE: magnetic core is, essentially, ribbon core made of magnetically soft amorphous alloy containing in its composition cobalt, iron, chromium, silicon, and boron in the following proportion of components, atom percent: iron - 2-5; chromium - 1-7; silicon - 9-15; boron - 9-15; cobalt - the rest; silicon plus boron make up 21-25 atom percent; B_r/B₈₀₀ ratio in magnetic core is higher than 0.8 upon annealing in longitudinal magnetic field, where B_r is residual flux density; B₈₀₀ is flux density at magnetic field strength of 800 A/m or B_r/B₈₀₀ is lower than 0.1 upon annealing in transverse magnetic field. EFFECT: improved design of magnetic core. 2 cl, 1 dwg, 1 tbl