ADJUSTABLE TRANSFORMER Russian patent published in 1997 - IPC

FIELD: electromechanical engineering; high- voltage transformers incorporating voltage regulation provision and low-voltage welding transformers with welding-current characteristic droop regulation. SUBSTANCE: transformer has case with disks installed at its ends and provided with radial slots on inner sides to receive wedge-section plates of nonsolid ferromagnetic material. Primary and secondary windings are made as flat coils; each winding is connected as armature windings of ac machines. Magnetic shunts are installed on inner cylindrical surface of magnetic core and carry magnetizing windings connected to adjustable rectifier unit. Shunts may be also shifted from magnetic core with aid of mechanical device. EFFECT: improved design, enlarged functional capabilities. 3 cl, 4 dwg