DC Motor Speed Controller is a small electronic module used to control the speed of brushed DC motors by varying the motor's power using Pulse Width Modulation (PWM). PWM changes the average power delivered to the motor while maintaining efficiency, allowing smooth speed adjustment with minimal heat loss.
Model: 1203BK
Input Voltage: 6V–28V DC
Maximum Continuous Current: 3A
Maximum Power: About 80W
Speed Control Range: 0–100% (adjustable with a rotary knob)
Control Method: PWM (Pulse Width Modulation)
Protection: Many versions include reverse-polarity protection and overcurrent protection.
Common applications
This controller is suitable for:
Small DC motors
DC cooling fans
Water pumps
Robotics projects
DIY electronics
Small electric toys and hobby projects