" Hmm . . . Now why don't they just use a full metallic electrical circuit, thus doing away with the inductive coupling losses? Too simple, perhaps? "
Judging by Scottie's Mum's recent experience and the electric kettle I fixed the other day, the design of reliable contacts is too advanced or not sexy. Or can't the drivers be relied on to unplug before they move off ? Funny - a door interlock works OK on our washing machine.
I did see an unconfirmed report that the frequency was "HF" ! With a rectifier load it will have a long string of harmonics - great !
Seriously I am having a bet with myself how long before a 50Hz cable is added - quietly !