Seiko Epson, Murata team up on contactless quick charger

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Neutral

Murman @ Sep 29th 2007 7:09AM

The technology is old and boring. I'd hate to see a magnet shoot through a wall when you place it near one of these wireless chargers. You probably won't recieve and sms with all that electromagnetic distortion. 70% efficiency is the goal? A transformer, which this effectively sounds like, are usually 95% and up.

Neutral

Mile @ Sep 29th 2007 9:10AM

http://www.engadget.com/2007/09/24/wipower-touts-breakthrough-in-wireless-power/

More specifically, they say that, "in a laboratory environment," their system achieves an efficiency of about 68%, a number they think could eventually reach 80%. That's opposed to the median efficiency of 58% found in many corded power supplies today, some of which drop as low as 16%, according to WiPower.

Neutral

Carlton @ Oct 1st 2007 1:13PM

95% efficient transformers are very expensive. And that's on a solid core, not just through the air. 70% efficiency, through the air, is great.

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