Can someone replicate and analyze what is happening here, why does this still feel like watching magic, the dude took a microwave fan coil, disassembled the core, took the remaining rod from the coil and ended up with an "air core" from what i understood it is wired like a joule thief, but i am not sure how it works without a core, and especially how it transfers energy to a spinning magnet and effectively powers extra 2 LED's..
would be nice if Dave replicated this and explained how "joule thief" works or if this video is related, I suspect it is the same sort of thing like that bateroo battery life extender sort of jazz, but this is just a speculation.