Electrical resistance element for variable resistance devices

Details Electrical resistance element for variable resistance devices Electrical resistance element for variable resistance devices

1979-02-26

1980-12-02

Albritton, C. L.

Electrical resistors

Mechanically variable

Movable contact electrically adjustable over length of...

338138, 338176, 338142, 338320, 338314, 338171, H01C 1040

Patent

active

042374421

ABSTRACT:
An electrical resistance element for use in variable resistance devices such as trimmers and potentiometers, having two or more resistance materials on a non-conducting base. The resistance materials are aligned along a path of travel of a movable wiper or contact to provide a series of variable linear resistances or a non-linear resistance. The interface between the resistance materials is arranged so that individual contact elements of the wiper traverse the interface at different times.

REFERENCES:
patent: 2118072 (1938-05-01), Deutschmann
patent: 2134870 (1938-11-01), Fruth
patent: 3379567 (1968-04-01), Wright
patent: 3464050 (1969-08-01), Lawson
patent: 3479216 (1969-11-01), Counts et al.
patent: 3492623 (1970-01-01), Yamada
patent: 4039994 (1977-08-01), Ward
patent: 4051453 (1977-09-01), Barden

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