| 摘要 |
PROBLEM TO BE SOLVED: To provide a contactless feeding apparatus that reduces an overcurrent caused in a secondary side circuit having a resonance circuit independent of a secondary coil when the secondary side circuit is brought relatively nearer to a primary coil magnetically coupled thereto.SOLUTION: A resonance coil 13 uses a core reactor 18 having an iron core, and a control input determined by a quantity of electricity of a secondary coil 12 changing with distance between a primary coil 11 and the secondary coil 12 changes an effective inductance of the core reactor 18, to cause a resonance frequency f2 of the resonance circuit formed by the resonance coil 13, a capacitor 15 and the core reactor 18 to go away from an oscillation frequency f1 of a high frequency power supply 14, which prevents an overcurrent from flowing through the secondary side circuit including the secondary coil 12. |
