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Sony Develops a Highly Efficient Wireless Power System

Posted on | February 16, 2010 | 6 Comments

How many times have you hoped and wished for a wireless solution to those power cables running all around your systems ? Well, here is an answer to your prayers. Sony has come up with its recent innovation : Wireless Power Transfer System.

The concept of Wireless Power has been in news for some time now. Lot of researchers have been working to find a breakthrough in the system to be able to charge the electronic devices without the aid of wires. A team from MIT came up with the concept of WiTricity ( as in Wireless Electicity) and demonstrated it by lighting a 60W electrical bulb that was wirlessly connected to the power source seven feet away. The concept has been based on magnetic resonance by which electromagnetic energy is transmitted to those receivers that have the identical resonant frequencies as the transmitting device.

With magnetic resonance as the base, Sony Corporation has developed a prototype system that can transmit 60W electricity to a a device situated at about 50-80 cms away. The power transmission between the transmission and the recipient devices is 80% efficient. When a rectifier circuit is included, the efficieny is still 60%. Sony has built a repeater device that can increase the transmission range. The repeater device, being a passive component, is placed between the transmitting and the receieving devices to relay magnetic resonance.

So the time is not very far away when one can have a clutter-free TV set hooked onto the wall. And the countdown for a complete wireless world has begun.


6 Responses to “Sony Develops a Highly Efficient Wireless Power System”

  1. david
    May 19th, 2010 @ 7:02 am

    MIT stole the idea of magnetic resonance from john boys a professor at the University of Auckland in New Zealand. He discoveried it 22yrs ago and was the founder of this technology. I am student there and what they are doing are years a head of anything that these company have done. MIT are so far behind.

  2. John Matty
    August 18th, 2010 @ 1:11 pm

    If I remember correctly about Patents 22 years is the beyond the time for it to be valid. If also he published it in a paper then its out there in the public ready to be used and modified. Also if he didn’t file an international patent then any foreign person has the right to basically take that idea with no penalty.

  3. Man
    October 27th, 2010 @ 11:47 am

    Well this was done way before 22 years ago . Infact more than 100 years ago by Nikola Tesla also gave the world AC current ..

    January 31st, 2011 @ 9:56 am

    Nikola Tesla was the first to do this. He is the only one who can claim originality.

  5. Udhay
    March 25th, 2011 @ 1:31 pm

    TESLA introduced wireless power transmission tech a long years ago. But noubody have guts to use until now. Sony takes as a challange to apply in real field application. Its really appreciatable.

  6. KVM
    August 9th, 2011 @ 8:42 pm

    An AM crystal set radio, perhaps one basic example wireless power portable radio.

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