MAGNETIC CORE AND PROCESS OF ITS MANUFACTURE Russian patent published in 1994 - IPC

FIELD: electrical engineering. SUBSTANCE: magnetic core is composed of section of wire having three layers inner and outer layers present correspondingly magnetically soft and hard phases and additional layer is phase which value of coercive force is bigger than that of magnetically soft phase but is smaller than value of coercive force of magnetically hard phase. Relationship of properties of these phases is such that separable coil can generate unidirectional voltage pulses in symmetric remagnetization field with intensity of 30-40 Oe or bidirectional voltage pulses of increased amplitude if remagnetization symmetric field is increased to 50-80 Oe. Characteristic feature of process of manufacture of such core lies in twisting of section of wire being under tension which effort is less than limit of elasticity of wire material only in one direction till signs of plastic deformation will appear on outer surface of wire. EFFECT: improved operational characteristics of magnetic core, facilitated manufacture of magnetic cores. 2 cl, 2 dwg, 2 tbl