Frequency digital converter

Details Frequency digital converter Frequency digital converter

1975-04-03

1977-05-24

Heyman, John S.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

328 75, 328127, 328129, 324 78D, 340347AD, G01R 2302

Patent

active

040258688

ABSTRACT:
The proposed device serves to convert the input frequencies into corresponding digital values. In the pulse counting means for counting the pulses from a reference oscillator during each period of the input signal to be processed, the frequency of the reference oscillator is varied in a predetermined manner. It is therefore possible to appropriately change the output digital values in accordance with the change in the input frequency, the change in the output digital value being the set characteristic of each of predetermined ranges of frequencies.

REFERENCES:
patent: 3217144 (1965-11-01), Hinnah
patent: 3221250 (1965-11-01), Wang
patent: 3458823 (1969-07-01), Nordahl
patent: 3706935 (1972-12-01), Hughes
patent: 3914760 (1975-10-01), Logue

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