How to transfer electrical power from stationary to rotational part.that can be used for POV display?
My company don't use slip rings - they are too noisy for applications we have. We have a stator and rotor coupled magnetically to supply power to the rotor. We also use various methods for retrieving the data namely "optical" for end-of-shaft applications requiring high data rates (>100Mbps), inductive loops for "round-the-shaft" applications up to 100Mbps and radio for applications that are lower data rate and may be needed on applications where rotor and stator have variable distances. If you send me an email I can provide information that isn't really appropriate for putting in answers on this site.