How to make a control circuit for a DC 24V/150W motor for speed variation and direction reversal

Thread Starter


Joined Feb 1, 2018
Hey everyone!

I'm seeking some guidance on creating a control circuit for a 24V/150W motor with speed variation and direction reversal capabilities. I've done some research and have a basic understanding of the components involved, but I could really use some expert advice to ensure I'm on the right track.

Here's what I have gathered so far:

  1. Motor Specifications: I have a 24V/150W brushed DC motor that I need to control.
  2. Motor Driver Does anyone have any recommendations for motor drivers that can handle 150W power and operate at 24V?
  3. Power Supply
  4. Wiring and Connections: I plan to connect the motor driver to the motor and power supply, but I want to make sure I wire everything correctly. If anyone has experience with wiring high-power motors, I would greatly appreciate some guidance on the proper connections and pin configurations.
  5. Speed Control: My motor I suppose supports speed variation, and I've learned that using pulse-width modulation (PWM) can help achieve this. How can I incorporate PWM to control the motor's speed effectively? Any insights or suggestions on the PWM signal source and adjusting the duty cycle would be extremely helpful.
  6. Direction Reversal: To change the motor's direction, I understand that I need separate control inputs for forward and reverse. If anyone has experience with direction control for high-power motors, could you please share how I can wire and control the direction reversal effectively?
I'm eager to learn from your experiences and insights on creating a control circuit for a 24V/150W motor with speed variation and direction reversal. If you have any resources, tutorials, or personal advice to share, please do! Thank you in advance for your help.


Joined Nov 6, 2012
~150-Watts is a very vague description, much more information is required.

What is the "Locked-Rotor-Amps", and the "No-Load-Amps" ?

How much Inertia ( weight ) is this Motor expected to swing around ?

Does this Motor have a Gear-Box attached ?, ( description and Gear-Ratio ).

What will control the Speed ( Torque ) and Direction of the Motor ?

Is precise RPM-Control required ?

Overall purpose of this project ?

These things, and possibly more, will determine the ideal approach to designing a Motor-Controller.