Frequency measurement circuit

Details Frequency measurement circuit Frequency measurement circuit

1985-10-17

1987-11-17

Tokar, Michael J.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

324 79R, G01R 2302

Patent

active

047076534

ABSTRACT:
A frequency measuring circuit measures the period between successive pulses of an input signal and converts the pulse count to a measured frequency value. The measured frequency signal is filtered to eliminate spurious noise and a variable threshold is generated by comparing the measured frequency and the filtered frequency. Only frequency signals qualified by the variable threshold are accepted as valid and provided as the output.

REFERENCES:
patent: 3387222 (1968-06-01), Hellwarth et al.
patent: 3502993 (1970-03-01), Schurzinger
patent: 3534261 (1970-10-01), Haner et al.
patent: 3673391 (1972-06-01), Lougheed
patent: 3820021 (1974-06-01), Clarisse
patent: 3895293 (1975-07-01), Munz
patent: 3992666 (1976-11-01), Edwards et al.
patent: 4073432 (1978-02-01), Schroder
patent: 4236110 (1980-11-01), Shearer et al.
patent: 4253373 (1981-03-01), Foerst
patent: 4280387 (1981-07-01), Moog
patent: 4281577 (1981-08-01), Middleton
patent: 4345206 (1982-08-01), Skalka
patent: 4424482 (1984-01-01), Drogin
patent: 4430611 (1984-02-01), Boland
patent: 4468614 (1984-08-01), Takahashi
patent: 4471299 (1984-09-01), Elmis
patent: 4485396 (1984-11-01), Sandberg

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