Method and apparatus for quickly and precisely measuring the fre

Details Method and apparatus for quickly and precisely measuring the fre Method and apparatus for quickly and precisely measuring the fre

1987-04-17

1988-05-17

Tokar, Michael J.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

324 77H, G01R 2302

Patent

active

047453567

ABSTRACT:
In a method for measuring the frequency of a signal, in which counting pulses are counted and the counting result is emitted in the form of a digital signal, the counting pulses are derived from clock pulses, and the frequency of all the counting pulses is equivalent to a multiple of the frequency of the clock pulses. The counting pulses appear at various taps of a delay chain and are counted with the aid of a plurality of counters. After at least one period or one portion of the period of the signal has elapsed, the contents of the counters are added together.

REFERENCES:
patent: 3086172 (1963-04-01), Johnson
patent: 3909714 (1975-09-01), Nakano
patent: 4270209 (1981-05-01), Albanese

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