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Slip rings

Slip rings (also called collector, electrical rotary joint, rotary electrical interface, rotating electrical connector or swivel) are electromechanical devices that electrically connect a rotating part with a stationary structure. A slip ring consists of a conductive circle or band mounted on a shaft and insulated from it. Electrical connections from the rotating part of the system are made to the rings. Fixed contacts or brushes run in contact with the rings, transferring electrical power or signals to the exterior, usually the static part of the system.

Slip rings can be found in a wide variety of markets and applications like: