| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a non-contact power feeding method wherein a voltage supplied to a load connected to a power receiving circuit is kept constant and a voltage required to a load is supplied only when required, by changing a resonance frequency as a voltage stabilizing method against a conventional fixed resonance frequency, so that correction is performed even if the inductance of the power receiving circuit changes. <P>SOLUTION: An electric power is supplied in non-contact manner to a power receiving circuit from a power feeding line 1 connected to a power source 3 by electromagnetic induction. A variable capacitor 5 is provided that changes its capacity at the hour rate of switching. A voltage on the power receiving circuit side is detected and the hour rate is changed when the voltage drops, so that the operation point of the variable capacitor 5 is shifted to a position at which a prescribed voltage is generated. <P>COPYRIGHT: (C)2004,JPO</p> |
