A few demo’s of random things powered up with a 3.7V battery inverter circuit.
See this thread for lots of similar circuits, with circuit diagrams: https://www.energeticforum.com/renewable-energy/7051-joule-ringer.html
Most surprisingly, wireless fields are present all over the setup. Best range so far is with a small tesla tower…giving a field of several inches 
Gotta love those xenon camera flashes for their lightning effects !
Post time: Feb-13-2018