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US 4,123,741 AGranted
Resistance element for variable resistors
AssigneeAlps Electric Co., Ltd.
InventorsTetsuhiro Kiyono, Moritoshi Nakamura, Jun Nakanowatari
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Abstract
A resistance element for obtaining a continuous and linear output characteristic is obtained by the combination of a zig-zag resistance element and a resistance film of higher resistivity disposed thereover.
Claims4
A variable resistor comprising:
- an elongate, substantially planar base plate formed from an electrically insulating material;
- a resistance element formed in a zig-zag pattern on a surface of said base plate by depositing thereon a material having a predetermined resistivity;
- an elongate resistance film formed over said resistance element and extending along the central portion thereof, said resistance film being formed from a material having a resistivity higher than that of the material forming said resistance element;
- and
- a slider having a portion thereof in sliding contact with said resistance film and adapted to be moved therealong.
2 more elements
Dependencies are inferred from the claim text.