Wireless power transmission is already researched for long. In the late nineteenth century, the scientist Nikola Tesla was able to light up downtown lamps power using electromagnetic induction. Approximately one hundred years later, with the intensification of studies in the area of wireless energy transfer, researchers at MIT managed to transmit power with great efficiency rate through this technology, plus electromagnetic resonance concepts. The technology works very simply, because only need to have a device that contains small loops or coils emit magnetic field and another device that has coils or receiving coils of this field. The transmitter must be connected to a source of alternating voltage in order to generate a varying magnetic field. The receiver, to suffer influence of this field starts producing current through the magnetic induction.