FIELD: electrical engineering; manual arc-welding devices. SUBSTANCE: transformer has magnetic core, primary and secondary windings, shunt built up of two wedge-shaped members, and shunt displacement facility. Newly introduced in transformer is alignment member made in the form of isosceles trapezoid in longitudinal section. Shunt displacement facility has control rod and crosspiece. Control rod is joined at one end to alignment member for its displacement over longitudinal axis; crosspiece is installed perpendicular to control rod. Crosspiece is kinematically coupled with bases of wedge-shaped members for displacing the latter perpendicular to magnetic core when moving alignment member over longitudinal axis. EFFECT: improved performance characteristics. 5 cl, 3 dwg
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