September 24, 2007

Efficient Wireless power transmission

WiPower uses induction (magnetic coupling) to transfer power from the base station to the receiving devices. They are claiming 68% efficiency in the transfer of power and believe that they can achieve 80% efficiency. A regular power cord is 58% efficient.


Anonymous said...

What do you mean "regular power cord is 58% efficient"? If I plug in a 1000W heater, only a tiny percentage of those 1000W gets dissipated as heat *in the power cord*. Please check your numbers. Even 80% efficiency for wireless transmission may not be good enough if fast recharging is desired.