Coil device

Details Coil device Coil device

1994-06-01

1996-11-12

Hall, Carl E.

Metal working

Method of mechanical manufacture

Electrical device making

29593, 29606, H01F 4106

Patent

active

055727883

ABSTRACT:
A method for adjusting inductance of a coil device of a closed structure wherein the coil device outside magnetic substance forming an endless loop, an inside magnetic substance formed inside of the outside magnetic substance and a coil wound on the periphery of the inside magnetic substance. The coil device further includes gaps between both ends of the outside magnetic substance and the inside magnetic substance, and notches or holes in the outside magnetic substance. In adjusting the inductance of the coil device, a jig is inserted through the notches or holes so as to shift the position of the inside magnetic substance with respect to the outside magnetic substance.

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