Frequency counter

Details Frequency counter Frequency counter

1984-03-21

1986-10-07

Tokar, Michael J.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

324 78R, 331176, G01R 2302

Patent

active

046161732

ABSTRACT:
A frequency counter employs a temperature sensitive oscillator mounted in proximity to a master crystal oscillator to provide an output frequency which varies appreciably with changes in ambient temperature and the frequency of the temperature sensitive oscillator is periodically counted and compared to a table of correction factors stored in memory to select a correction factor which is applied to the counted frequency of an input signal to provide a temperature corrected frequency count.

REFERENCES:
patent: 3713033 (1973-01-01), Frerking
patent: 4257005 (1981-03-01), Hall
patent: 4297657 (1981-10-01), Frerking
patent: 4325036 (1982-04-01), Kuwabara
patent: 4380745 (1983-04-01), Barlow

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