Frequency counter

Details Frequency counter Frequency counter

1982-06-14

1984-06-26

Tokar, Michael J.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Analysis of complex waves

324 78R, 324 78D, 377 52, G01R 2316

Patent

active

044568762

ABSTRACT:
A frequency counter (20) measures and displays a plurality of frequencies appearing on input channels (22, 24, 26 and 28) of an analog circuit (30). A program switch (32) is coupled to a decoder logic circuit (34) which facilitates the operation of counter (20) in one of a plurality of selectable program modes. A steering logic circuit (36) is coupled to circuit (34) and facilitates the selection and order of the input channels (22, 24, 26 and 28) during a measurement cycle. Toggle switches (38, 40 and 42) are coupled to circuit (36) to facilitate the establishment of a sign bit, a channel order and a channel select, respectively. A channel display circuit (46) provides visual indication of the sign, channel select and channel order.

REFERENCES:
patent: 2309481 (1943-01-01), Summerhayes, Jr.
patent: 3806808 (1974-04-01), Willmore
patent: 3838338 (1974-09-01), Khoury
patent: 3917927 (1975-11-01), Minton
patent: 3997764 (1976-12-01), Belmonte et al.
patent: 4020418 (1977-04-01), Burrage
patent: 4130799 (1978-12-01), Cherry
patent: 4139819 (1979-02-01), Worley
patent: 4215308 (1980-07-01), Kusters
patent: 4257003 (1981-03-01), Yool
patent: 4326256 (1982-04-01), Furumorto

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