Such to what there is electromagnetic induction type and a magnetic field resonance type. Electromagnetic induction type non-contact power supply is one that is already in practical use in charging such as smartphones, and the mutual induction action available. Extend the transmission distance, the development for eliminating severe of alignment during charging is progressing magnetic. The magnetic field resonance type non-contact power supply is intended to utilize a large resonance transmission distance, for practical use it anymore least Ku extensible likely will take is high but in time.