Abstract: A rotary connector module for displays has at least one stem and rotor parts. A rotary rotation system containing a stator part base is disposed atop a winding and a magnetic system of the rotor part, the magnetic system disposed above or outside of primary and secondary winding members. An electrical power transmitter carries wireless electrical power from stem to rotor part, with the diameter of each stem or rotor part smaller than the diameter of the magnetic system. A wireless transmission system contains a hollow shaft disposed in the at least one rotor part, an at least one signal transmitter disposed on the at least one stator part, and an at least one signal receiver disposed on the at least one rotor part, with the signal receiver at the end of and below a base of the hollow shaft.

Abstract: A resonant rotating transformer design increases efficiency while maintaining the small dimensions of devices in which the transformer is used. The inventive concept lacks a ferrite or other metal core and instead uses at least two secondary winding members positioned near a primary winding member on a non-magnetic base. The lack of a ferrite core increases the overall lifespan and efficiency of the resonant rotating transformer while permitting the resonant rotating transformer's small dimensions of substantially under 100 mm, as well as resistance to stress and vibrational loads. The resonant rotating transformer is optimized for holographic fan displays but is useful for other electronic devices. Variations of sequential and parallel alignment for elements of the at least two secondary winding members, as well as various winding arrangements, enable changes of properties of the resonant rotating transformer.

Abstract: A rotary connector module for displays has at least one stem and rotor parts. A rotary rotation system containing a stator part base is disposed atop a winding and a magnetic system of the rotor part, the magnetic system disposed above or outside of primary and secondary winding members. An electrical power transmitter carries wireless electrical power from stem to rotor part, with the diameter of each stem or rotor part smaller than the diameter of the magnetic system. A wireless transmission system contains a hollow shaft disposed in the at least one rotor part, an at least one signal transmitter disposed on the at least one stator part, and an at least one signal receiver disposed on the at least one rotor part, with the signal receiver at the end of and below a base of the hollow shaft.