Low cost speed and direction controller
21 March 2011
Rotalink has developed a low-cost speed and direction controller for dc motors up to 1.5A, featuring pulse width modulation for high quality speed control and an on-board potentiometer for smooth and precise adjustment. The board mounted unit, measuring just 63mm x 46mm, has a wide user supply range from 7 to 24Vdc, with the single-turn potentiometer set at 50% for zero speed.

The new speed and direction controller may be used across Rotalink's range of brushed dc motors, which includes standard ferrite and high performance rare earth magnet systems as well as heavy case designs. The controller is part of Rotalink's portfolio that combines brushed and brushless dc motors, and ac motors with its gearbox, motor feedback and motion controls. Rotalink provide competitive miniature power transmission systems providing up to 28Nm output torque for rotary motion and to more than 50N force for linear motion.
The full range includes a wide choice of planetary and spur gearboxes that feature standard or enhanced polymer gears on sintered or ball bearings. Rotalink manufactures a novel range of ovoid style gearboxes with high torque output that combines spur gears with planetary stages using ultra-polymer materials.
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