The Dynamo Motor/Generator (4V–12V DC) is a small DC motor that can work as a motor when power is supplied, and also act as a generator (dynamo) when its shaft is rotated manually. It is widely used in DIY projects, science experiments, mini wind turbines, hand-crank generators, and educational demonstrations of energy conversion.
Core Component Features
• Device Type: DC Motor + Mini Generator (Dynamo)
• Working Principle: Converts electrical ↔ mechanical energy
• Voltage Range: 4V – 12V DC
• Output Type (Generator Mode): DC voltage output (depends on speed)
• Rotation: Works in both directions
Electrical & Interface
• Operating Voltage (Motor Mode): 4V – 12V DC
• Output Voltage (Generator Mode): Up to approx. 12V (based on RPM)
• Terminals: 2-wire / solder type motor terminals
• Polarity: Reversing polarity reverses motor direction
• Best Output: Higher RPM gives higher voltage in generator mode
Performance & Usage
• Motor Mode: Can drive small wheels, fans, or light mechanisms
• Generator Mode: Can light small LEDs or charge capacitors (low power)
• Smooth rotation and fast response
• Output varies with load and speed (not regulated)
Physical & Integration
• Compact cylindrical metal body
• Lightweight and easy to mount
• Shaft compatible with small pulleys, gears, or coupling wheels
• Suitable for hand rotation or belt-driven generator experiments
Applications
• Hand-crank generator projects
• Mini windmill / turbine generator
• Science and school demonstrations
• Battery charging experiments (low current)
• DIY robotics (as a small motor)
Pro Tip
• In generator mode, connect a bridge rectifier + capacitor if you want smoother DC output
• Don’t overload the motor in generator mode, it will become hard to rotate
• For stable voltage, use a DC-DC converter or regulator after output
Package Includes
• 1 × Dynamo Motor/Generator (4V–12V DC)