DC Motor Speed Controller
Vary the speed of your DC motor with this inexpensive circuit. Gear
boxes can be costly and series resistors may cause stalling and overheating.
This circuit delivers the voltage to DC motors with pulses and the speed is controlled via pulse-width modulation
(PWM). Also see our
Bi-Directional DC Motor
- L: 4" W: 2-3/8" H: 1-3/4".
- DC Motor Speed Controlled via a potentiometer.
- Speed control for DC motors
up to 100 Volts @ 7.0Amps without sacrificing motor torque.
- Uses NE556
to pulse-width modulate IRF530N MOSFET.
- This DC Motor controller can
handle up to 16Amps, but PCB trace capacity would have to be beefed up
with some hookup wire where DC motor current runs through the Printed
- Requires operating voltage of 9 - 18 VDC.
(Need a Power Supply?)
- Plastic case for DC motor
controller circuit is included.
This PWM DC motor controller
circuit can be used for generating hydrogen, build your own fuel cell
station. More common uses include controlling DC motors in golf
carts, buggies, RC cars, robotics, DC hobby motors, toy DC motors, etc.
CK1400.pdf for complete
details, including schematic and theory of operation. Requires
Adobe Acrobat Reader available at