ELECTROMAGNETIC-ACOUSTIC TRANSFORMER Russian patent published in 2005 - IPC

FIELD: non-destructive control methods.

SUBSTANCE: device is provided with at least two ring-shaped permanent magnets, tightly pressed to each other, with position of poles on outer and inner side surface, and at least one round permanent magnet, mounted on one side of their end surface and directed to their inner poles by pole of same sign and cylindrical concentrator, made of ferromagnetic material and mounted on same axis with round magnet inside ring-shaped magnets. On the side, directed to inductiveness coils, concentrator is made at least with two shelves, forming magnetic poles of same polarity. Each inductiveness coil is made multilayer by height of separate conductors, connected serially with transfer from higher layer onto lower layer in n coils, separated from each other by a layer of dielectric substance.

EFFECT: decreased sensitivity due to decreased size of bobbins and increased number of coils.

4 dwg