Slip rings for electrical signals & power transmission | rotarX
Taidacent Hollow Slip Ring Rotary Electrical Contact 2/4/6/12 Wires Collector Ring Conductive Electric Motor Slip Ring Rotating Connector (6 Wires 10A Inner Hole 12.7mm OD 54mm) - - Amazon.com
Types and Usage of the Slip Rings - The Engineering Projects