Excitation circuitry for variable reluctance transducer

Details Excitation circuitry for variable reluctance transducer Excitation circuitry for variable reluctance transducer

1979-11-19

1981-01-13

Stearns, Richard R.

Geometrical instruments

Area integrators

Electrical

33172E, 33174L, G01B 702

Patent

active

042441080

ABSTRACT:
Improved excitation circuitry for a variable reluctance transducer is disclosed which includes a transformer having a primary winding and a secondary winding. Power circuitry coupled to the primary winding induces an AC excitation signal in the secondary winding which is coupled to the transducer. An error detection circuit compares a reference signal with the excitation signal and feeds back an error signal to the power circuitry to compensate for any differences therebetween. In such manner, a constant excitation signal is maintained for the transducer.

REFERENCES:
patent: 3878984 (1975-04-01), Sotiropoulos et al.
patent: 4038756 (1977-08-01), Smith et al.
patent: 4109200 (1978-08-01), McNulty
patent: 4115923 (1978-09-01), Smith et al.
patent: 4181958 (1980-01-01), Juengel et al.
patent: 4197650 (1980-04-01), Bailey et al.

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