Method and apparatus for extracting inbound information generate

Communications: electrical – Systems – Selsyn type

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307 3, 340310A, H04B 356

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active

049184229

ABSTRACT:
Waveforms are derived from each primary of a multi-phase electric distribution system, which derived waveforms include at least a carrier component. At least some of which derived waveforms include a signal component. The waveform of one of the primaries is adjusted in amplitude and phase so that the carrier components of the derived waveforms substantially cancel when the waveforms are summed together.

REFERENCES:
patent: 3689841 (1972-09-01), Bello et al.
patent: 4106007 (1978-08-01), Johnston et al.
patent: 4188619 (1980-02-01), Perkins
patent: 4217467 (1980-08-01), Kobayashi et al.
patent: 4218655 (1980-08-01), Johnston et al.
patent: 4254402 (1981-03-01), Perkins

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