FIELD: electricity.
SUBSTANCE: device for contact-free power supply includes a resonant device for power supply receipt set to the predefined resonance frequency; a resonant device for power supply set to resonance frequency equal to the predefined resonance frequency; oscillator configured so that AC power can be introduced to the resonant device for power supply; impedance detector configured so that it can detect impedance in a certain frequency range from power supply side; and frequency metre configured so that frequency of AC power can be set. The oscillator is configured so that electric power can be supplied to resonant device for power supply receipt by forming resonance between the resonant device for power supply receipt and the resonant device for power supply.
EFFECT: frequency variation device is configured to preset frequency of AC power in compliance with impedance value detected by the impedance detector within the predefined frequency range.
5 cl, 12 dwg
