Tesla Wireless power kit and accessories
The Heliognosis TWP kit is a simple modular system that allows the user to demonstrate wireless electric power transfer using the same method that Nikola Tesla developed. The system is powerful enough that it can be used out of the box for close range power transfer applications as well as mid range signalling.
The sound module connects to the output terminal of the Tesla Wireless Power receiver. When the spiral coils of the Wireless power system are placed about 16" (40cm) apart, the connected sound module will produce an audio tone similar to a Theremin.