Transmitting over power lines

Details Transmitting over power lines Transmitting over power lines

1976-07-26

1977-06-21

Habecker, Thomas B.

Communications: electrical

Systems

Selsyn type

307248, H04M 1104

Patent

active

040315282

ABSTRACT:
A transponder transmitter for transmitting over power lines includes a rectifier circuit that rectifies the power at power line frequency to provide a unipolar potential having ripple at twice the power line frequency. A circuit receives a drive signal from a modulator for interrupting the unipolar potential at a rate corresponding to the carrier frequency of the modulating signal. Circuitry, including a triac couples the interrupted unipolar potential to the power lines.

REFERENCES:
patent: 3714451 (1973-01-01), Whitney
patent: 3786473 (1974-01-01), Trombly

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