| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a secondary circuit receiving circuit of noncontact power supply equipment which can be protected, even if an abnormal voltage is generated in a resonance circuit. SOLUTION: Heat-sensing wires 21 whose tip ends are opened are connected to both the ends of a pickup unit (a resonance circuit consisting of a coil 2 and a capacitor 3). A circuit protector 22 is provided between a constant voltage control circuit 5 and a load 6. A series circuit, consisting of the tripping coil 22A of the circuit protector 22 and a surge absorber 23 is connected to both the ends of the load 6. Furthermore, a nichrome wire 24 is wound on the heat sensing wires 21 and both the ends of the nichrome wire 24 are connected to the output terminals of the constant voltage control circuit 5 via the auxiliary contact 22B of the circuit protector 22. With this constitution, the constant voltage control circuit 5 and the load 6 can be separated from the power supply side, when an abnormal voltage is generated in the resonance circuit and the application of the abnormal voltage to the constant voltage control circuit 5, etc., can be avoided, so that the possibility of the breakdown of a device, etc., is eliminated.</p> |
