Synchronous oscillator demodulator system

Details Synchronous oscillator demodulator system Synchronous oscillator demodulator system

1979-12-20

1982-06-15

Krass, Errol A.

Boots, shoes, and leggings

328 14, 336130, 364487, G06J 100

Patent

active

043354424

ABSTRACT:
A synchronous oscillator demodulator for linear variable differential transformers and synchronous resolvers having electronic circuitry designed to digitally construct a preferred waveform of a predetermined frequency and to establish precisely the preset point at which the amplitude of the waveform is to be measured at the secondary winding of the transformer. This synchronous oscillator demodulator permits the use of linear variable differential transformers and synchronous resolvers for high frequency applications and under conditions of noise and vibration while still maintaining a high degree of accuracy and repeatability. A system and apparatus to enhance the signal from a given linear variable differential transformer and tune same in relation to the signals of other similar but not identical transformers is disclosed.

REFERENCES:
patent: 2494493 (1950-01-01), Schaevitz
patent: 2886243 (1959-05-01), Sprague et al.
patent: 3513301 (1970-05-01), Howe
patent: 3551655 (1970-12-01), Walsh
patent: 3727037 (1973-04-01), Zorn
patent: 3891918 (1975-06-01), Ellis

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