A power line carrier is communication equipment that operates at radio-frequencies, generally below 600 kilohertz, to transmit information over electric power transmission lines. A high frequency signal is superimposed on the normal voltage on a power circuit. The power line carrier is usually coupled to the power line by means of a coupling capacitor in conjunction with a line trap.
A device for producing radio-frequency power for transmission on power lines.
 Figure 1. Power-line carrier schematic |
 Figure 2. Power-line carrier device in control house |
