Circuit arrangement for selective frequency analysis of the ampl

Details Circuit arrangement for selective frequency analysis of the ampl Circuit arrangement for selective frequency analysis of the ampl

1976-11-15

1978-02-14

Griffin, Robert L.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

325 67, 325363, 325470, 324 77C, H04B 136

Patent

active

040742008

ABSTRACT:
A circuit arrangement for the frequency selective analysis of the amplitudes of one or more signals in which a selective receiver is automatically scanned through a given frequency band and the scanning speed of its frequency settings is controlled as a function depending upon the difference in amplitude of signal voltages consecutively received in time and including a second selective receiver is provided which has its frequency setting changed synchronously with that of the first receiver with a constant frequency spacing between the two receivers and with the frequency of the second receiver being ahead of the first receiver and including an analysis device connected to the second receiver to derive control signals.

REFERENCES:
patent: 2954465 (1960-09-01), White
patent: 3110861 (1963-11-01), Hurvitz
patent: 3821651 (1974-06-01), Fathauer et al.

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