Contactless linear rotary potentiometer

Details Contactless linear rotary potentiometer Contactless linear rotary potentiometer

1975-11-24

1976-10-26

Truhe, J. V.

Electrical resistors

Resistance value responsive to a condition

Magnetic field or compass

307309, 323 94H, 336110, 338 68, H01L 4308

Patent

active

039887103

ABSTRACT:
A contactless potentiometer which has a linear output characteristic is constructed with a pair of elongated, hollow cylindrical tubes which are made of magnetically saturable material and are aligned so that their axes form an angle less than 180.degree., with both of said tubes having at least one conductive wire coupled therewith which is interconnected with the wire that is coupled with the other tube, and a moveable magnet which is formed as a segment of a circle with a pair of straight sides that move adjacent to said tubes so that the total volume of said tubes that is magnetically saturated remains substantially constant while the inductance ratio of the tubes varies.

REFERENCES:
patent: 3331045 (1967-07-01), Weiss et al.
patent: 3335384 (1967-08-01), Weiss
patent: 3476997 (1969-11-01), Otzipka et al.
patent: 3671854 (1972-06-01), Masuda
patent: 3689836 (1972-09-01), Snyder

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