Communications: electrical – Systems – Selsyn type
Patent
1988-04-25
1990-04-17
Orsino, Joseph A.
Communications: electrical
Systems
Selsyn type
307 3, 340310A, H04B 356
Patent
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
Emerson Electric Co.
Orsino Joseph A.
Swarthout Brent A.
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