Method of forming a coil on a core

Details Method of forming a coil on a core Method of forming a coil on a core

1989-07-31

1990-12-18

Hall, Carl E.

Metal working

Method of mechanical manufacture

Electrical device making

29605, 336192, 360123, G11B 542, H01F 706

Patent

active

049776665

ABSTRACT:
In a method for forming a coil and a coil formed by the method, a first wire having a thick insulating coating is inserted into a hole of a workpiece and wound around a peripheral surface of the workpiece to form a first winding layer, and a second wire having a thin insulating coating is continuously wound around the first wire to form a second winding layer so that a coil apparatus is formed. A junction between the ends of the first wire and the second wire serves as an intermediate tap for the coil apparatus.

REFERENCES:
patent: 2864064 (1958-12-01), Heaton
patent: 4847984 (1989-07-01), Rossi et al.

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