With wireless transmission of electric power, irritating tasks such as replacing batteries or using a charger to recharge batteries will be drastically reduced. In some cases, it will be possible to dispense completely with power cords. New technologies are appearing, providing the means to cut final chains, offering completely wireless power supply and charging. Diverse commercial applications are expected from the second half of 2007.

Wireless power supply technologies at present can be divided into three groups according to their principle of operation. The first non-contact technology achieving widespread adoption in many portable terminals is electromagnetic induction. Two coils are brought close to each other and when current is passed through one, the generated magnetic flux causes electromotive force to be generated in the other. Click here to read more…

Source: TechOn