Wireless Power

Posted on August 25, 2008  Comments (3)

An end to spaghetti power cables by Maggie Shiels, BBC News

Mr Rattner envisaged a scenario where a laptop’s battery could be recharged when the machine gets within several feet of a transmit resonator which could be embedded in tables, work surfaces, picture frames and even behind walls.

Intel’s technology relies on an idea called magnetic induction. It is a principle similar to the way a trained singer can shatter a glass using their voice; the glass absorbs acoustic energy at its natural frequency. At the wall socket, power is put into magnetic fields at a transmitting resonator – basically an antenna. The receiving resonator is tuned to efficiently absorb energy from the magnetic field, whereas nearby objects do not.

Intel’s demonstration has built on work done originally by Marin Soljacic, a physicist at Massachusetts Institute of Technology (MIT). At the Intel Developer Forum in San Francisco, researcher Alanson Sample showed how to make a 60-watt light bulb glow from an energy source three feet away. This was achieved with relatively high efficiency, only losing a quarter of the energy it started with.

Don’t expect to see this available commercially this year, they estimate it is at least 5 years away. Though this is not university and business collaboration in the sense they are working together, it is in the sense that Intel is building upon the work MIT did. See other posts on university and business collaboration.

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3 Responses to “Wireless Power”

  1. Ben düşündüm adamlar yapmışlar: Kablosuz elektrik | Çağdaş Polat
    August 28th, 2008 @ 3:55 am

    […] kablosuz hale getirilecek. Yani fiÅŸ, priz, çoklayıcı derdi olmayacak. Konuyla ilgili burada Ä°ngilizce inceleme var. Hatta içinde YouTube videosu bile var. Bir de altta […]

  2. Ruben
    September 2nd, 2008 @ 10:32 am

    Funny, wireless power transmission was one of N. Tesla’s projects. He worked on it for years without success though.

  3. Steven Leung
    January 30th, 2009 @ 3:08 am

    No more wires. I’m definitely hoping this goes into production sooner rather than later. I’ve seen this in a more limited fashion in cell phone charging pads. Just put the phone on the pad and it charges.

    I do wonder a little about the efficiency compared to cable power but I especially like the applications it has for pervasive computing.

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