DC Motor speed control

 

1) Typical rotational speed between 3000 and 8000 rpm at specified voltage

2) Speed is roughly proportional to voltage.

3) A motor operating a below ideal speed/voltage provides less torque

4) A gearhead motor has a reduced speed and increased torque.

5) Wrong way to reduce speed - potentiometer. Energy lost as heat.

6) Right way to reduce speed - Pulse Width Modulation (PWM). No extra energy lost.

 

 

 

 

 

 

 

 

 

 

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