POWER TRANSMISSION DEVICE, POWER FEEDING SYSTEM, AND IMPEDANCE ADJUSTING DEVICE OF ELECTRIC CIRCUIT
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United States of America Patent
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Sep 15, 2016
app pub date -
Dec 10, 2013
filing date -
Dec 10, 2013
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Abstract
A power transmission device includes a power transmission circuit, a third coil, and a turning device. The power transmission circuit includes a second coil that supplies a first coil of a power receiving device with electric power. The third coil is magnetically coupled with the second coil. The turning device causes the third coil to turn about a turning shaft that intersects with a winding shaft of the second coil, to change an impedance of the power transmission circuit such that the electric power is cut off or supplied.
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