How do machines like MRI that use large freely rotating pieces with sensors and tools attached deliver power and send/recieve data, I don’t think they would have miles of cables on a spool thats ready to be wound back and forth?
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They use a piece of equipment called a “slip ring” to transmit power and electrical signals through a rotating surface.
One end of the device has wires that end in spring-loaded brushes and the other end has a series of metal rings. The brushes connect with the rings to complete the circuit during rotation.
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