1203B 6V- 28V 3A PWM DC Motor Speed Controller Module

1203B 6V–28V 3A PWM DC Motor Speed Controller Module is a compact and efficient solution for controlling the speed of DC motors using pulse-width modulation (PWM). It allows fine adjustment of motor speed without loss of torque and includes a built-in knob for manual control. Ideal for DIY electronics, robotics, and fan control applications.

Key Features:

• Wide Voltage Range: Operates from 6V to 28V DC, compatible with various motor types.
• Current Handling: Supports continuous current up to 3A, suitable for medium power motors.
• PWM Control: Adjusts speed without reducing torque or efficiency.
• Built-in Potentiometer: Integrated knob for smooth manual speed adjustment.
• Protection Circuitry: Equipped with fuse and reverse polarity protection.

Technical Specifications:

• Input Voltage: 6V to 28V DC
• Output Current: Up to 3A (continuous)
• Control Type: Pulse Width Modulation (PWM)
• PWM Frequency: 16kHz
• Speed Adjustment: 0%–100% via rotary potentiometer
• Efficiency: Greater than 90%

Mechanical Specifications:

• Board Size: Approx. 32mm × 50mm
• Mounting Holes: 4 corner holes for panel mounting
• Connector: Screw terminals for input/output
• Cooling: Aluminum heatsink for thermal dissipation

Wiring and Connections:

• Input Terminals: Connect DC power source (6V to 28V)
• Output Terminals: Connect to DC motor
• Knob Control: Turn clockwise to increase speed, counterclockwise to decrease

Datasheet and Documentation:

• Download 1203B PWM Controller Datasheet (PDF)

Applications:

• DC Motor Control: Fan speed, pumps, toys, and automation projects
• Robotics: Speed control for mobile robots and wheels
• LED Dimming: PWM-based dimming of high-power LEDs (with current limiting)
• Solar Systems: Motorized adjustments or fan cooling control

Equivalent Modules:

• HW-686: Similar PWM controller with 3A output
• XY-PWM: Digital PWM module with LED display
• LM2596 PWM Module: Step-down converter with PWM motor control output

Package Includes:

• 1 x 1203B 6V–28V 3A PWM DC Motor Speed Controller Module