As anyone who has a love of the history of technology knows, though Thomas Alva Edison was ‘the wizard of Menlo Park’, Nikola Tesla was someone who had no such nickname, but was simply acknowledged as a genius of the highest order.
Tesla made strides in the movement of energy, and the physics of electricity in general, that unfortunately, were lost, and are only being rediscovered today. In one famous experiment, Tesla showed how he could power common light bulbs, from a source many miles away.
Now, Sony seems to be trying to use that idea to charge a few of its products without connection, and from a larger distance than any sort of inductive charging would allow.
Wireless charging is not something really new but there is still room for improvement especially when talking about efficiency of power delivery and truly contactless charging as well as its effective range. Just recently, Sony has announced a new milestone that could delight those that are looking for technology breakthrough. Surprisingly, the Japanese company claimed that it has developed a system that can supply a 60W power transmission through magnetic resonance technique with greater efficiency of up to 60 percent.
Unlike current inductive charging technology that still requires physical contact point for charging such as those being implemented in Dell Latitude Z or Palm Pre solution, the solution from Sony based on magnetic resonance technique is claimed to be able to have true wireless energy transmission and more importantly, it can achieve much higher power delivery suitable for any power-hunger applications. At this moment, the prototype system is able to reach up to 60 percent power efficiency with maximum power delivery at 60W for a range of 19.7 inch. With a passive repeater unit putting in the middle of transmitter and receiver, there is a chance to extend the wireless link up to 31.5 inches to make the whole solution more practical for real world.
No further information on when and how the Japanese company plans to make this ready for public but it may still take a while since there are some technical obstacles before ready to be deployed in actual end products.
The first thing my mind goes to is the availability of cell phones to be charged when a person brings the phone home at night, placing it on the nightstand, so that it is charging, yet easily available when that late night emergency call comes in, and the only half-awake owner does not want to fight with the connected wall cord (charging stands for cell phones seem to have gone the way of the dodo).
Another thing that would be great would be the availability of many more powered devices that would be in use almost continuously, yet be completely free of connections to the wall socket. I imagine this would be very appealing to many wives, who constantly fight the urge to remove things from the living room, simply because the power cords detract from the decor.
Perhaps this is just the start of a completely new way of having technology in our lives, looking less like the legendary Hydra, with many wires featuring wall warts as heads, and more like the devices we see in Star Trek, which provide incredible utility, along with superlative freedom.