What’s wireless energy transfer?
It means transfering energy without wires. duh
Nikola Tesla came out with this idea, 100 years ago, in his Wardenclyffe Tower project.
The inductive charging technique
Induction charging products are widely available such as
the ‘wireless’ charging toothbrush
and the phones charging pad.
It’s sort of wireless but it is still very near field charging technology.
MIT decided to say it’s not enough
Resonant Inductive Charging
The MIT team came out with a research group, the WiTricity and successfully achieved a distance of 2 metres with 40% power transmission efficiency. This makes the possibility to wireless charge every single electronics in a home/office comes to a reality.
It’s an efficient energy exchange between tuned resonant objects at certain frequency.
In the project, there are two coils, a transmitter and a receiver.
The current passes thru the transmitter coil will induce a magnetic field.
With this technique, wirelessly powered devices are made possible. Say byebye to Lithium battery.