Inductive potentiometer

Details Inductive potentiometer Inductive potentiometer

1980-03-26

1982-09-14

Groody, James J.

Communications: electrical

Continuously variable indicating

With particular transmitter

318629, 318632, 318634, 34087042, G08C 1948

Patent

active

043498221

ABSTRACT:
An inductive potentiometer for supplying a d.c. output voltage, which is linearly variable as a function of the rotation angle of a spindle. The potentiometer is constituted by a synchro-resolver and two associated circuits, an a.c. voltage supply circuit of one stator winding incorporating an oscillator whose amplitude is controlled by the supply voltage and an output circuit connected to the rotor which incorporates a demodulator stage. The linearization of the voltage as a function of the angular position of the spindle is ensured by a circuit shunt incorporating an amplifier whose gain is close to 0.5 controlling another stator winding. Temperature compensating windings can be included on the stator.

REFERENCES:
patent: 3011119 (1961-11-01), Starks-Field et al.
patent: 3179877 (1965-04-01), Godet
patent: 4037147 (1977-07-01), Smith
patent: 4083237 (1978-04-01), Levesque
patent: 4157536 (1979-06-01), Gauthier
Electro-Technology, "Resolvers Classified for Selection", Lang, Feb. 1966, pp. 109-110.
IEEE Transactions on Electronic Computers, Broughton, pp. 359-362.

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