DC 12–40V 10A PWM DC Motor Speed Controller ModuleThis robust DC 12–40V 10A PWM DC Motor Speed Controller Module is designed to regulate the speed of brushed DC motors using pulse-width modulation (PWM) technology. Furthermore, it offers high efficiency, high torque, and low heat generation by varying the duty cycle from 10% to 100%. Consequently, it provides smooth and precise speed control for various motorized applications. Therefore, it is widely used by hobbyists and engineers for DIY projects, conveyor belts, and small machinery. Specifically, the board features a built-in fuse for over-current protection, heavy-duty aluminum heatsinks, and a convenient rotary potentiometer knob for manual speed adjustment. Moreover, screw terminal blocks ensure secure and hassle-free wiring.
Key Features:
- PWM Speed Control: Utilizes pulse-width modulation to adjust motor speed smoothly without sacrificing torque.
- Wide Operating Range: Supports input voltage levels from 12V to 40V DC to accommodate various motor types.
- High Current Capacity: Handles up to 10A of continuous output current for demanding drive tasks.
- Integrated Protection Fuse: Includes an onboard glass fuse to safeguard circuitry against over-current faults.
- Manual Rotary Potentiometer: Features an attached control knob for effortless user-adjustable speed tuning.
- Efficient Thermal Management: Equipped with multiple aluminum heatsinks to dissipate heat from critical power switching components.
Technical Specifications:
- Input Voltage Range: DC 12V to 40V
- Max Output Current: 10A
- Control Power: Up to 400W (depending on operating voltage)
- PWM Frequency: 13 kHz
- Duty Cycle Range: 10% to 100%
- Operating Temperature Range: −20°C to +75°C
Mechanical Specifications:
- PCB Substrate: Green FR4 Fiberglass Board
- Power & Motor Terminals: Heavy-duty screw terminal blocks
- Cooling Components: Clip-on aluminum fin heatsinks
- Mounting: Pre-drilled corner mounting holes for stable enclosure installation
Dimensions:
- Board Length: 55.0 mm
- Board Width: 60.0 mm
- Height (Including Knob): ≈ 35.0 mm
Pinout and Wiring:
- Power Input (DC+ / DC−): Connect to your 12V–40V DC power source (observe polarity).
- Motor Output (Motor+ / Motor−): Connect directly to the leads of your brushed DC motor.
- Fuse Protection: However, check the inline fuse before operation to ensure it is intact and properly rated for your load.
Datasheet Reference:
- Download DC Motor PWM Speed Controller Application Guide
Commonly Used in:
- DIY Robotics: Controlling drive motor speeds on custom rovers and automated buggies.
- Small Machinery: Regulating speeds on mini lathes, drills, and belt sanders.
- Ventilation Systems: Controlling the airflow speed of custom DC cooling fans.
Applications:
- Variable Speed Driving: Adjusting rotational velocities smoothly without mechanical gear changes.
- Conveyor Speed Regulation: Controlling belt speeds in small-scale automated sorting projects.
- Consequently, it extends motor longevity by reducing thermal stress during startup phases.
Equivalent Models:
- PWM 20A DC Motor Speed Controller: A higher-capacity alternative for loads up to 20A.
- PWM 5A Motor Controller Module: A smaller, lower-power option for compact 5A setups.
- PWM Controller with Reversible Switch: Variant featuring a forward/reverse direction toggle switch.
Package Includes:
- 1 x DC 12–40V 10A PWM DC Motor Speed Controller Module
- 1 x Rotary Control Knob Cap

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