Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Frequency of cyclic current or voltage
Patent
1973-03-15
1978-08-22
Wilbur, Maynard R.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Frequency of cyclic current or voltage
307233R, 324 78R, 343 171PF, G01R 2302
Patent
active
041091973
ABSTRACT:
A pulse repetition frequency (PRF) detection system is provided for indicating the existence of pulse trains having predetermined repetition frequencies in a composite signal containing pulse trains of different pulse repetition frequencies. The system includes a plurality of independent sorters to which the composite signal is sequentially applied. Each of the sorters is operable to detect a pulse train having a predetermined pulse repetition frequency, to indicate the detection, and to produce pulses for inhibiting or blocking the application of the corresponding pulses of the composite signal on a pulse-by-pulse basis. The sorters may be arranged and interconnected in a decreasing order of frequency detection whereby the signal applied to each successive sorter has all higher frequency detected pulse trains removed therefrom.
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patent: 3278936 (1966-10-01), Wolf
patent: 3299295 (1967-01-01), Goda
patent: 3437940 (1969-04-01), Tarczy-Hornoch
patent: 3484704 (1969-12-01), Hungerford
patent: 3518555 (1970-06-01), Konotchick, Jr.
patent: 3546600 (1970-12-01), Riesgo
patent: 3609396 (1971-09-01), Gassmann
patent: 3714654 (1973-01-01), Wicks et al.
patent: 3758856 (1973-09-01), Fromm
Lang, Jr. Milton R.
O'Berry William A.
Berger Richard E.
Trepp R. M.
Westinghouse Electric Corp.
Wilbur Maynard R.
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