Purpose of Slip Rings in an Alternator - Electrical Concepts
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
What's the difference between electric and fiber-optic slip rings?