Sneak Peak into the future.....

[J57ltr]

As I recall the losses were substantial, and you had to have the device directly on top of the "charger". The design I saw basically was a coil with a core shaped like a tophat and the "reciever" had one as well. It also mentioned a magnetic detent (When the cores were aligned) so you knew it was in place then it switched to an AC mode for charging.

Jeff