Transmitter/receiver circuit for signal transmission over power wiring
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United States of America Patent
Stats
-
May 14, 1985
Grant Date -
N/A
app pub date -
Dec 20, 1982
filing date -
Dec 20, 1982
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A system transmits and receives control signals for various types of indoor devices using the existing power wiring in houses and buildings. The transmitter section of the power wiring transmission system is provided with a circuit in which the output of a sine wave oscillator is fed to an emitter-follower through a photocoupler and this output is then fed to the indoor power distribution line through a series resonance circuit after stepping down with a transformer; and the receiving section is provided with a circuit in which the signal from the distribution line is fed to a parallel resonance circuit after passing through a series resonance circuit. Moreover, the input and output sections are resistor terminated.
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Family
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Cited Art Landscape
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