FIELD: radio engineering, communication.
SUBSTANCE: scope of application is for information transmission via power supply lines. System (8) for connection between communication wire line (10) having characteristic impedance of the line and having a possibility of transmitting a signal containing electrical power supply and data, and control unit (6) containing contact output (12) of electrical power supply and contact output (14) of data. System (8) has input impedance and contains means (34, 36, 42) for matching input impedance with impedance of the line. Besides, the system has a possibility of receiving a signal containing electrical power supply and data; besides, electrical power supply and data have the same frequency spectrum.
EFFECT: improving data transmission quality.
14 cl, 8 dwg
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