| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a self-excited power feeding device, a self-excited light-emitting device, and a self-excited sterilization device which are usable in a leakage AC magnetic field environment, dispenses with power feeding wiring, and offers high degree of freedom of installation. <P>SOLUTION: A self-excited power feeding device according to the prevent invention includes, in order to operate in an AC magnetic field environment of a predetermined frequency, a detection coil 7, a resonance capacitor 8 which is connected in parallel to the detection coil 7 to form a resonance circuit 9, and a rectification circuit 10 which is connected to the resonance circuit 9. The detection coil 7 is disposed to be interlinked to an AC magnetic field, and an AC voltage induced in the detection coil 7 is resonated for amplification by the resonance circuit 9. The rectification circuit 10 boosts the amplified AC voltage without power fed from the outside and converts it into a DC voltage. <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |
