This article leads naturally to the question--the same question behind Moore's Law and a number of other technological paradigms--is there really such a thing as too many options? Too much power? Too much diversity? Too much integration?
It doesn't matter how many ways we develop to send power to a rechargeable device, we still need to have a compatible receiver on the device end. Just when standards are being set to ensure compatible charging cords for mobile phones, we seem to be spiraling into endless combinations and permutations of wireless charging protocols. Consumers probably just need to step away and allow the competition to play out.
I was going through an article on the same topic and learned that the efficiency of RF transmission would be ~90% and above for this device. So 10% of that would be dissipated as heat? Again some more would be dissipated by the receiver, the charging chip on the device being charged...don't know how much that would be.
I think it is a natural market evolution @Dr Quine...some technologies, standards and companies will eventually die...at this point it is not clear who is the winner, BTW, the winner might be decided by a consumer company like Starbucks not by the technology company...Kris
Till today portable electronics was not consumer power, but with this kind of devices being used for charging batteries will be consuming more power than required individually by the actual portable device. Yes it is better that it removes the charging connectors from the devices but at the same time it is equally required to be economical in terms of power consumption.
"The signals are received by electronics built into the charging device and then converted to DC energy"
I am assuming that the "charging device" mentioned here is some kind of RF energy harvesting device which converts RF energy into charging current. What is the kind of RF signal used? I wonder if the electronic gadgets with these "charging devices" would be capable of harvesting RF energy from mobile phones, wireless devices, radios etc. even when not kept inside those charging boxes...possible?