DC Motor Governor PWM speed controller for 5V-35V DC input with 5A 90W output, adjustable speed regulation via potentiometer knob, 20kHz frequency, includes switch function for motor control, compact 30mm x 26mm x 14mm dimensions
DC Motor Governor with PWM Speed Regulation for 5V-35V Input and 5A 90W Output

This PWM DC motor governor offers precise speed control for direct current motors requiring voltage input between 4.5V and 35V DC. Designed with practical applications in mind, it provides adjustable speed regulation through pulse width modulation technology, delivering smooth motor operation across a wide range of speeds. The compact unit measures just 30mm in length by 26mm in width by 14mm in height (excluding the potentiometer handle), making it suitable for installations where space is at a premium. With a maximum output current of 5A and power handling capability of 90W, this governor can manage various DC motor types while consuming minimal standby power at just 7µA when not actively controlling a motor.
Features and Construction

The DC motor governor incorporates several key features for reliable motor speed management in different applications. Its construction focuses on delivering consistent performance while maintaining a compact form factor suitable for integration into various projects and systems.
Material and Build
Built with electronic components specifically selected for DC motor speed regulation circuitry, this governor employs PWM technology operating at a 20kHz frequency. The design includes a potentiometer knob for manual speed adjustment, allowing users to vary the output duty cycle from 1% to 100% for precise motor control. The construction ensures compatibility with DC power sources while preventing damage from incorrect connections through proper circuit design.
Size and Practical Fit
With dimensions of 30mm long by 26mm wide by 14mm high excluding the potentiometer handle, this compact governor fits easily into various installation scenarios. The small footprint makes it particularly useful for projects where space constraints are a consideration, such as robotics, small machinery, or educational demonstrations. Despite its compact size, the unit delivers substantial 5A current output and 90W power handling capability for controlling a range of DC motors.
Uses and Placement

This DC motor governor finds application in both educational and practical settings where controlled motor speed is required. Its versatility stems from the wide input voltage range and substantial output capacity, allowing integration into various projects and systems.
Event or Professional Use
In professional or event settings, this governor can control DC motors for exhibitions, demonstrations, or practical installations requiring regulated motor speed. The ability to handle up to 5A current makes it suitable for small to medium-sized motors used in displays, automated systems, or prototype development. The built-in switch function provides convenient on/off control, while the adjustable potentiometer allows fine-tuning of motor performance during operation.
Everyday Home Use
For home workshops, hobby projects, or educational purposes, this governor offers accessible motor control for DIY applications. It can regulate speed for various DC motors found in small tools, model projects, or custom installations around the home. The clear operating parameters—with specific voltage and current limits—help users select appropriate power sources and motors for their projects while avoiding potential damage through incorrect connections.
Benefits and Buying Value

Choosing this DC motor governor provides several practical advantages for users needing reliable speed control for their DC motor applications. The value comes from its combination of performance specifications, compact design, and straightforward operation.
Reuse and Low Maintenance
The governor's design allows for repeated use across different projects thanks to its durable construction and clear operating guidelines. By following the provided connection instructions—particularly avoiding AC mains connection and ensuring correct DC polarity—users can maintain the unit's functionality over time. The low 7µA static current consumption in standby mode helps conserve power when the governor is connected but not actively controlling a motor.
Why Choose This Product
This PWM DC motor governor offers a practical solution for speed regulation with its specific 4.5V-35V input range and 5A output capacity. The adjustable potentiometer provides straightforward speed control without complex programming or setup, while the compact dimensions facilitate installation in space-limited applications. The combination of 90W power handling, 20kHz PWM frequency, and clear operational guidelines makes this governor a functional choice for various DC motor control needs.
