"The day when we don't have to plug in our consumer electronics is getting=
=20
closer, claim a a new startup firm named uBeam that has developed a safe=20
way of beaming power to your devices.
=20

Rather than using inductive charging, which has a very short effective=20
range and usually requires that the charger and device be in close=20
proximity to each other, uBeam uses an ultrasonic transducer to convert=20
power from your wall socket into inaudible sound energy. On the device=20
side, there's a battery adapter that converts the sound energy back into=20
power to charge your batteries. The ultrasonic frequency used is well above=
=20
the range that can be heard by humans or dogs."

http://littleurl.info/i91

Colin

--
cdb,   3/07/2009
=20
--




colin@btech-online.co.uk

--=20
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