FIELD: electrical engineering; signal transmission over three-phase power mains. SUBSTANCE: proposed method enables signal transmission over three-phase power grid without its treatment by high-frequency traps. Generator circuit using passive-active method for current input into three-phase power mains has transformer, power mains, inductance coil, bridge diodes, switch, and resistors. EFFECT: reduced power requirement of generator. 1 cl, 3 dwg
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