Abstract: A system includes a slip ring plate and a pair of brush assemblies mounted on each side of a housing. The disk-shaped slip ring plate is mounted to a first gimbal member and has a plurality of concentric, truncated circular shaped electrical conductive segments disposed on one surface thereof, the electrical conductive segments being electrically insulated from each other and divided (truncated) into half circular segments by discontinuities on each side of the slip ring plate. Pins (22) are fixed to a cylinder (152) on the gimbal (22). The pins (22) pass through acruate slots (40) in the slip ring (18). Motors (14, 16) are used to cause rotation of the gimbal with the slip ring remaining stationary until the pins engage ends of the slots (40), the slip ring then rotating with the gimbal, the rotation being limited by slip ring stops engaging housing stops.