FIELD: transport engineering; power supply of electric tractors, electric loaders and other mobile electric units and vehicles. SUBSTANCE: according to invention, supply source energy is raised in voltage and frequency and is converted in to free charge energy, then free charges are transferred through special device from source to receiver under action of Coulomb forces along thin flexible conductor. Energy of free electric charges is converted at receiver into alternating or direct current. Device features low metal consumption, high reliability and low energy consumption. EFFECT: increased run of mobile electric unit and improved maneuverability. 11 cl, 7 dwg
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