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How can I control the speed of a small electric motor – hobby project?

Under Family Category: Hobby and Leisure

I wish to carry out the speed of the tiny electric motor. I’m creation the tiny hobby project, what tools would we need to do this, on top of the motor? Also should we make use of the brushless, or unchanging motor?


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It depends. Is it a DC or AC motor? You can control a DC motor by varying the voltage applied to it. AC motors need a circuit with Triac’s in it to vary the time when the AC is applied to the motor. There are electronic kits on the internet that do this for you. To control a brushless motor you need to use pulses to vary the speed. Varying the voltage level won’t work. You control the speed by varying the time the voltage is applied to it.

Alan wrote on May 12, 2010 - 12:45 am | Visit Link

put a rheostat in series with it. The value and wattage of the rheostat will depend on the current drawn and the voltage of the motor.

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billrussell42 wrote on May 12, 2010 - 12:45 am | Visit Link

Well its a small motor or else i would have recommened a motor-drive which gives you same amount of tourqe but less RPM. If you lower your voltage it will have less rpm but not as much torque only way to do this is to put a gear box in. or gears

Freestiles wrote on May 12, 2010 - 12:45 am | Visit Link

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