FIELD: drives of reciprocating mechanisms. SUBSTANCE: device control coil 1, cylindrical springs 2 and 3 made of ferromagnetic material, one of which is inserted into coil 1 and other spring embraces it. Ends of springs are fixed together. Both springs are connected on one end to former of coil 1. Energizing coil 1 displaces springs 2 and 3 through distance depending on voltage supplied. EFFECT: improved design. 3 dwg
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