Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Frequency of cyclic current or voltage
Patent
1974-09-16
1976-04-06
Brody, Alfred L.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Frequency of cyclic current or voltage
324 77C, 325452, 329124, 331 19, H03D 716, G01R 2300
Patent
active
039493121
ABSTRACT:
Frequency scanning means and method comprising a broadband signal discriminator means for receiving and delivering signals within its frequency band, detecting means receiving signals delivered by the discriminator means and providing output signals related to the frequencies of the received signals, signal generating means selectively providing output signals corresponding to the frequencies of signals within the band of said discriminator means, and signal processing means receiving the output signals of said detecting means and said generating means and delivering an output signal for each signal delivered by said discriminator means having a frequency selected by said generating means, and including gating means receiving signals from the discriminator means and the processing means and delivering signals from the discriminator means during receipt by the gating means of signals from the processing means.
REFERENCES:
patent: 3121202 (1964-02-01), Gray
patent: 3397360 (1968-08-01), Kaneko et al.
patent: 3729738 (1973-04-01), Cross et al.
patent: 3748590 (1973-07-01), Gray
American Electronic Laboratories, Inc.
Brody Alfred L.
Trachtman Jacob
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