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runing 3x 24vdc motors

Discussion in 'DIY Motion Simulator Building Q&A / FAQ' started by dong414, Nov 23, 2009.

  1. dong414

    dong414 New Member

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    hi can any help me i whant to run3x24vdc motors from one power unit what size of unit do i need as would like use from my main 240v ac i have seen a chinnes unit 240 to 24v dc and 20amps my motors 200w motors would this work or will i have to use batteries iam new to this building 3dof flight sim than for all help
  2. Ads Master

    Ads Master

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  3. skarvsladden

    skarvsladden New Member

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    Hi!
    Try to use this formula:
    P = U x I
    U = P / I
    I = P / U

    P = WATT
    U = VOLTAGE
    I = CURRENT

    In your case this should be like this:
    I = 200/42
    I = 8.33A
    8.33 x 3 = 25A
  4. Frakk

    Frakk Active Member

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    Thats right, you will need 8.33Amps to run each motor at 200W. 20Amps MIGHT be enough if you don't run ALL 3 motors at the same time. Even running 2 of them will push the 20A limit because DC motors need more current to get up to speed, so peak currents might be well above the rated 8.3A.

    Just get 2 car batteries and make it easy. Then you won't even need a 20A supply, 5A will be plenty.