Apparatus for generating a digital count proportional to an inpu

Details Apparatus for generating a digital count proportional to an inpu Apparatus for generating a digital count proportional to an inpu

1975-11-14

1977-04-26

Rolinec, Rudolph V.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

324 79D, 307269, G01R 2302

Patent

active

040204189

ABSTRACT:
An apparatus for generating a digital count proportional to the frequency of a pulsed input signal has two binary rate multipliers both of which provide output frequency signals dependent on the instantaneous count in a counter. A first one of the multipliers is responsive to a fixed input frequency and the second multiplier is dependent on the output frequency of the first multiplier. The value in the counter is decremented from an initially-set maximum by the output of the second multiplier. The apparatus is operated for a time dependent on the cycle time of the unknown pulsed input frequency. Decrementation of the count is inversely proportional to time. The count is thereby directly proportional to the unknown frequency.

REFERENCES:
patent: 3930199 (1975-12-01), Valis

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