Simplex Systems Ltd offers Variable Speed Alternate/ Direct Current Drive. Simplex Systems Ltd supplies a wide range of products on software development, workflow automation, process control and system integration. The Variable Speed Alternate/ Direct Current Drive is used to meet various applications for precise speed control, dynamic performance and constant torque over wide speed ranges. The Variable Speed Alternate/ Direct Current Drive is used for both AC and DC and is suitable for use in Steel, Paper and energy saving applications.