| 摘要 |
FIELD: electrical engineering. SUBSTANCE: method and apparatus are used during arrangement of communication channels with usage of electric power lines (0.38 - 10 - 35 - 110) kV without its treatment by high-frequency rejectors. Aim is to increase interference resistance of signal reception. Method uses PCM-FM modulation system with integration usage in specific points, that are time instants of feeding voltage passing through zero-point. Apparatus has two transmitters of passive-active type, three-phase rectifying bridge, resistor, capacitor, transformer, two narrow-band filters, two integrators, two heterodyne oscillators, inverter, two synchronizers, two oscillators. EFFECT: increased interference resistance of signal reception. |
