Mercotac® Rotary Electrical Connectors operate
on a superior principle. They offer an extremely low resistance
electrical connection because the electrical conduction path
is a liquid metal which is molecularly bonded to the contacts.
The Mercotac® connection is constant and unchanged for the
life of the rotary electrical connector. Brush slip rings are
usually composed of a rotating metal ring upon which a graphite
or metal brush rubs and transfers the electrical signal or current.
While brush slip rings are technically simple in operation,
this rubbing interface is fraught with problems that include
wear, high electrical resistance, oxidation, and resistance
fluctuations which causes electrical noise.