Tachometer circuit

Details Tachometer circuit Tachometer circuit

1975-01-31

1976-01-20

Rolinec, R. V.

Electricity: measuring and testing

Electrical speed measuring

Including speed analog electrical signal generator

324164, 324 16R, 324132, 307229, 328142, G01P 346

Patent

active

039342000

ABSTRACT:
A D.C. tachometer circuit comprising a non-linear D.C. tachometer which produces an output voltage having an A.C. ripple, a first current path from the D.C. tachometer including means for removing the D.C. component of the output voltage of the tachometer, means for inverting and isolating the A.C. voltage ripple, and means for eliminating drift and the D.C. level of the inverted and isolated A.C. voltage-ripple, means for mixing the original output voltage of the D.C. tachometer including the A.C. ripple and the inverted and isolated A.C. voltage ripple to establish a non-linear ripple-free output voltage, and means for linearizing the non-linear ripple-free output voltage.

REFERENCES:
patent: 3178641 (1965-04-01), Varterasian
patent: 3371224 (1968-02-01), Polo
patent: 3371269 (1968-02-01), Wattson
patent: 3644836 (1972-02-01), Johnson

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