Wireless power

Wireless Resonating Power from Intel Research
“Intel researchers are working on wireless power that doesn’t use a conductive pad. Instead, it uses magnets and a tuned directional transfer coil to send music from an iPod a couple of feet to a speaker. […] There’s an electro-magnetized ring of wire sending 1-watt signal at 7.6-something MHz. From there, a carefully placed and wound coil of wire (yellow) sends the magnetic signal in a direction where another smaller coil (green) specifically tuned to receive the power and send it to a tiny speaker.”
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Gizmodo

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