PWM DC Motor Speed Controller Module — 4.5–35V, 12V / 24V, Adjustable Speed Regulator

PWM DC Motor Speed Controller Module — 4.5–35V, 12V / 24V, Adjustable Speed Regulator

This PWM DC motor speed controller module provides smooth, stepless speed regulation for DC motors operating from 4.5V to 35V, covering the most common 12V and 24V DC motor systems. Using pulse-width modulation (PWM), it maintains full motor torque across the entire speed range — unlike resistive voltage dividers that lose torque at low speeds. The onboard potentiometer provides direct manual speed adjustment from 0% to 100% duty cycle.

Key Specifications

Parameter	Value
Input Voltage	4.5V – 35V DC
Max Output Current	Rated current (see variant)
Control Method	PWM (pulse-width modulation)
Speed Adjustment	Onboard potentiometer (0–100% duty cycle)
Compatible Voltages	5V, 6V, 9V, 12V, 24V, 36V systems
Motor Type	Brushed DC motor, fan, pump

PWM Speed Control vs Resistive Control

Feature	PWM Controller (This Module)	Resistive Divider
Torque at Low Speed	✅ Full torque maintained	❌ Reduced torque
Efficiency	✅ High (>90%)	❌ Low (heat loss)
Heat Generation	✅ Minimal	❌ Significant
Speed Range	✅ 0–100% smooth	❌ Limited range

Why Choose This PWM Controller?

• ✅ 4.5–35V wide input — covers 5V, 12V, 24V, and 36V DC motor systems
• ✅ Full torque at low speed — PWM maintains motor torque unlike resistive control
• ✅ 12V / 24V compatible — ideal for automotive, industrial, and DIY applications
• ✅ Simple potentiometer control — no programming or MCU required
• ✅ Compact module — easy to integrate into control panels and enclosures

Typical Applications

• 12V / 24V DC motor speed control for robots and automation
• Fan and blower speed regulation
• Water pump flow rate control
• Electric vehicle throttle controller
• Conveyor belt and actuator speed control
• LED brightness control (resistive LED loads)

Package Contents

• 1 × PWM DC Motor Speed Controller Module (4.5–35V)

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