Simplified frequency to digital converter using all digital elec

Details Simplified frequency to digital converter using all digital elec Simplified frequency to digital converter using all digital elec

1974-09-23

1979-03-13

Tokar, M.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

324 82, 324 83D, G01R 2302

Patent

active

041444892

ABSTRACT:
An all digital circuit converts a signal of an unknown frequency into an accurate binary representation of that frequency. The apparatus consists of an all digital closed loop system which has as its input the unknown signal. The closed loop system generates a reference signal and forces the frequency thereof to approximate that of the unknown signal. In so doing, the closed loop generates a binary number representative of the frequency of the reference signal and provides this number as the system output.

REFERENCES:
patent: 3160815 (1964-12-01), Ford et al.
patent: 3502977 (1970-03-01), Richman et al.
patent: 3764903 (1973-10-01), Griswold
patent: 3997764 (1976-12-01), Belmonte

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