ELECTRIC COIL PRODUCTION METHOD Russian patent published in 2015 - IPC H01F41/04 H01B13/06 

FIELD: electricity.

SUBSTANCE: non-insulated wire of valve metal is wound to a frame or the core; insulation layer is formed in process of winding by microarc oxidizing. Winding is performed in a bath with electrolyte with a metal tube submerged to it. During winding the wire is drawn through the tube. The process is performed using two alternate current sources. The tube and wire are connected to different poles of the first current source; one pole of the other current source is also connected to the wire while its other end is connected to the bath case. Inner diameter of the tube is selected from the formula d_tube=d_wire+(2…30) mm, where d_wire. At the end of winding process at fixed voltage current is measured in the circuit of the second source and quality of the produced insulation is assessed against measurement results.

EFFECT: improving quality.

3 cl, 1 dwg