Slashdot Mirror
Intel Demos Wireless "Resonant" Recharging
Al writes "Last Thursday researchers from Intel demonstrated a way to recharge electronics from about meter away using a 'resonant' magnetic field. At an event held at the Computer History Museum in Mountain View, the researchers showed off a pair of iPod speakers connected to a 30-centimeter-wide copper coil that received power from a similar, but larger, copper coil about a meter away. The recharging technique relies on a phenomenon called resonant coupling, in which objects can exchange energy when tuned to resonate at the same frequency. A similar approach was developed by researchers at MIT in 2007, and spun off into a company called WiTricity. This company has already developed a few products that use resonant coupling to recharge, including a car battery."
what is the power consumption of the transmitting coil when there is no load coil, also, does the power consumption increase or decrease based on the number of receiving coils??
and, what happens if you place a HDD, or your phone contains a HDD and is charged using this method, wont the magnetic field damage the magnetic media??
similarly, magnetic fields can mess up CRT's, try taking a magnet to a CRT screen..