| 摘要 |
A circuit includes a first circuit including therein a first coil connected to a power source and a first capacitance component, and a second circuit including therein a second coil connected to the power source and a second capacitance component, wherein the second coil is avenged so as to generate a magnetic field in such a direction as to offset a magnetic field generated by a current flowing through the first coil. Here, a self inductance of the first coil is substantially the same as a self inductance of the second coil, currents flowing through the first and second coils are made substantially the same by a mutual inductance between the first and second coils, a leakage inductance component of the first coil and the first capacitance component form a resonance circuit, and a leakage inductance component of the second coil and the second capacitance component form a resonance circuit.
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