Sony Working On Wireless Power Transfer

by **maxgoh** Mon Oct 05, 2009 10:24 am

Sony announced today that the company develops Wireless Power Transfer technology.
The Sony Wireless Power Transfer system can currently transfer up to 60 Watts of electrical energy over a distance of 50cm (at an efficiency of approximately 80%, approximately 60% including rectifier.)
Total wireless TVs are in our near future as it looks.
This new wireless power transfer system from Sony incorporates a form of contactless electrical energy transmission technology based on magnetic resonance.
With magnetic resonance, electromagnetic energy is only transferred to recipient devices that share the identical resonant frequencies as the energy source, so energy transfer efficiency is maintained, even when misalignment occurs.
Furthermore, even if there are metal objects located between the transmitter and receiver, no heat induction occurs.

he new wireless power transfer system combines these technologies to realize transfer efficiency of 60%, even when a rectifier is included. Sony has also developed passive extender units that are set to the same frequencies as the transmission and recipient devices, enabling the transfer distance to be extended from 50cm to 80cm without any degradation in transfer efficiency.　　　　

The Sony Wireless Power Transfer technology is still in prototype stage. There is no word yet how long it will take until Sony can market the wireless power technology in their TVs. Sony Working On Wireless Power Transfer Wireless-power-sony

Sony Working On Wireless Power Transfer Wireless-power-sony

by derricklim Mon Oct 05, 2009 11:11 am

me being an engineer, this idea is crazy...

by **yensheng** Mon Oct 05, 2009 12:32 pm

my telecommunication engineer friends said it already exist a while ago, but the distance and the amount of power transfered is limited

by derricklim Mon Oct 05, 2009 1:21 pm

yes, touch n go is using some sort of this. but the transmitable power strength and distance are so limited... especially the power strength.

now is driving tv... so is crazy for me... hahaha

by daisuke Mon Oct 05, 2009 1:25 pm

there was a newspaper article about it sometime ago. If my memory serves me right, it works like a Radiowave. So it's safe coz even if you put your hands right In between the field of current, the electric still transfers and you don't get an electric shock.
A transmitter transmitting the electric at certain frequency and a reciever recieving it.
It's amazing how technology has evolved and this would mean no more messy cables in the future!!!

by derricklim Mon Oct 05, 2009 1:35 pm

yes, how good if our PC requires no messy cables... hahaha

the cable manufacturers will die very soon... hahaha

by **yensheng** Mon Oct 05, 2009 4:00 pm

those science fiction stories are not fiction anymore

by CY Mon Oct 05, 2009 4:46 pm

Reminds me of a technology in Gundam anime whereby they can transfer power wireless. Though the efficiency isn't that good, but I guess it'll improve as more RnD is done on it.