Rotary manipulation type variable resistor and method of manufac

Electrical resistors – Mechanically variable – Movable contact electrically adjustable over length of...

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338162, 338188, H01C 1032

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06078248&

ABSTRACT:
In spite of small size, a rotary manipulation type variable resistor capable of preventing electromigration when used in direct-current electric field is obtained. Moreover, the process of forming the case while inserting the resistance substrate and current collector is simplified. It includes a resistance element layer disposed on a first insulating substrate, a conductive layer disposed on a second insulating substrate, and a slider having a first contact point contacting with the surface of the resistance element layer and a second contact point contacting with the surface of the conductive layer. The conductive layer is a printed layer containing conductive powder and binder, and the surface of the resistance element layer and the surface of the conductive layer are positioned mutually at a step.

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