"SI" AUTO TRANSFORMER is a continuously variable voltage auto transformer, having a movable carbon tip, fixed to brush arm sliding on a silver plated commutator. Rotation of the brush arm by either manual or motor drive, delivers an output voltage from zero to or above line voltage.

» Rugged Construction
» Excellent Regulation
» High Efficiency
» No wave form Distortion
» Low Operating Torque
» Smooth and Linear Output
» Low Magnetizing Current
» Negligible Maintenance
» Trouble-Free Long Life