FIELD: electricity.
SUBSTANCE: invention relates to electric engineering and may be used to manufacture ferrite toroids with high coercive force - permanent magnets, magnetisation vectors of which are slant-circular, that is when from any i point on end surface of toroid a vector may be drawn, lying in plane yi zi at a certain angle relative to axis zi, where axis yi is tangent to circumference with centre in the beginning of coordinates system xi yi zi passing through this point i on this circumference. Method for slant-circular magnetisation of ferromagnetic toroid is based on mutual application of two coils connected serially by saturating current, axis of symmetry of one of which matches with axis of symmetry z of ferromagnetic toroid, and the other one is wound on the toroid itself. The first one of them develops magnetisation along axis of toroid symmetry (parallel to axis zi), and the second one - along axis y, for each of i points of toroid end. Therefore resulting vector of magnetization, coming out of point i and indicated as Hi, is arranged at the angle φ=arctg(HII/H⊥) to axis zi and lies in plane yi zi, where HII and H⊥ - intensities of magnetic field in ferromagnetic toroid accordingly along axes yi and zi.
EFFECT: provision of controlled slant-circular magnetisation of ferromagnetic toroids.
3 cl, 4 dwg
