10A PWM DC Motor Speed Controller - 12V-40V Adjustable Stepless Regulator with Knob

Product Description The 12V-40V 10A PWM DC Motor Speed Controller is a high-efficiency regulator designed to control the speed of DC motors using Pulse Width Modulation (PWM). Unlike simple variable resistors, this controller maintains high torque even at low speeds by rapidly switching the power on and off. It features a rugged design with a large heatsink and a 10A fuse for overcurrent protection. The integrated potentiometer includes a "click" off position, making it an all-in-one solution for adjusting fan speeds, dimming high-power LED strips, or controlling small electric vehicle motors.

Key Features

• Stepless Speed Control: Provides smooth, flicker-free adjustment from 10% to 100% of the motor's rated speed.

• High Current Handling: Supports a continuous current of up to 10A, making it suitable for larger 775 or 795 series DC motors.

• Wide Voltage Range: Operates anywhere between 12V and 40V, offering flexibility for various battery and power supply setups.

• Built-in Safety Fuse: Includes a user-replaceable 10A glass fuse to protect your motor and controller from accidental stalls or shorts.

• Industrial Build Quality: Features high-quality MOSFETs and a large aluminum heatsink to ensure stable operation under heavy loads.

Technical Details

• PWM Technology: Controls speed by adjusting the duty cycle of the 13KHz signal, which reduces heat loss compared to linear regulation.

• Reverse Polarity Protection: Integrated high-current diode protects the circuit if the input power leads are accidentally swapped.

• Potentiometer with Switch: The 100K Ohm potentiometer serves as both the speed dial and the main power ON/OFF switch.

• Input Terminal: Heavy-duty screw terminals for "Power +" and "Power -" ensure a secure connection for high-gauge wires.

• Output Terminal: Dedicated "Motor +" and "Motor -" terminals for easy 2-wire DC motor attachment.

• High Efficiency: Modern circuit design achieves up to 90% efficiency, keeping the module cool during extended use.

• Mounting Holes: Four 3.2mm corner holes allow for secure mounting inside control panels or robot chassis.

• Low Heat Generation: The use of low RDS(on) MOSFETs ensures minimal energy is wasted as heat.

• Output Power Limits: Capable of handling up to 120W at 12V, 240W at 24V, and 400W at 40V.

• Static Current: Consumes only about 0.02A when the motor is connected but the speed is set to zero.

• Frequency Stability: Fixed 13KHz frequency prevents audible motor "whining" in most applications.

• Duty Cycle Range: Pulse width is adjustable from 10% to 100%, ensuring the motor always receives enough starting torque.

• PCB Construction: Double-sided high-quality FR4 fiberglass PCB with thick copper traces for high current paths.

• Versatile Load Support: Can also be used to dim 12V-24V DC LED strips or control heating elements (resistive loads).

• Compact Height: The 28mm profile fits easily into standard project boxes.