Electrical apparatus used with a potentiometer and/or variable r

Details Electrical apparatus used with a potentiometer and/or variable r Electrical apparatus used with a potentiometer and/or variable r

1987-11-06

1990-03-20

Goldberg, E. A.

Electrical resistors

Mechanically variable

Movable contact electrically adjustable over length of...

338 32R, 338 32H, H01C 1038

Patent

active

049104918

ABSTRACT:
An electrical apparatus is provided for use with a potentiometer or variable resistance element which does not require a mechanical connection between a contact member and an activating mechanism. This is accomplished by using a magnet in at least a portion of either the contact member or the activating mechanism while constructing at least a portion of the other of such contact member and the activating mechanism of a ferromagnetic material.

REFERENCES:
patent: 4125821 (1978-11-01), Masuda
patent: 4132970 (1979-01-01), Masuda et al.
patent: 4227171 (1980-10-01), Masuda et al.
patent: 4423406 (1983-12-01), Nakano
patent: 4602513 (1986-07-01), Hirota et al.

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