Motor Speed Controller, AC 220-240V Motor Speed Control Module Governor for Electromagnetic Asynchronous Motor(JD1A-40)

Product Information

Bought to replace the standard resistive foot pedal controller on a vintage domestic sewing machine. MUCH better slow speed control now, will stitch at a 'stitch by stitch' slow speed with much more torque. Built a custom 470ohm foot controller to go with it, motor stays cool, module stays cool, a perfect solution for the control of a small 50w AC motor, well worth going to the trouble to build it, well happy.

Loads of applications! ...regulates incandescent lamps, heaters, hand drills, motors etc. via a potentiometer. Operating voltage: 110...240V~. Max. admissible current: 6 amperes (3A constant duty). At 230V~ this corresponds to 1200 / 600W and to 600 / 300W at 110V~. If you read the Q&A on that drill someone replies to a question asking if it has variable speed, apparently the one you get does not (as you can see it's not mentioned in the spec). Note: This project is designed for brush type motors and is not suitable for induction motors or shaded pole motors. May also be used for low voltage loads (from 24V). Supply and load circuit electrically isolated from one another.

Latest Article Comments

If it is a DC appliance that needs to be controlled, the module can be installed at the primary (input) side of a transformer which in turn will give a proportional output on the transformers secondary (output) side, thus allowing full control over the DC output too. Perfect for loads of power, voltage & speedcontrol applications.

Control induction motors* up to 1.5kW (2HP) to run machinery at different speeds or controlling a pool pump to save money. Also works with 3-phase motors. Full form kit includes case, double-sided silk-screened PCB, heatsink, cooling fan, hardware and electronics (including parts from revised article in August 2013).

Max. admissible current: 6A (constant duty: 3A), at 110V~ this corresponds to maximally 600 watt or constant duty 300 watt, respectively, or to maximally 1200 watt or constant duty 600 watt, respectively, at 230Vac