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Answered Cooling fan types

Discussion in 'General Questions' started by PickyBiker, Jun 3, 2016.

  1. PickyBiker

    PickyBiker Active Member

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    I recently learned that the bed and extruder temperature is controlled by PWM. It would also appear the material cooling fan is controlled by PWM as well. Does that mean a specific type of fan must be used so that you can control the speed with PWM?

    If so, what are the relevant specs for a cooling fan?
     
    #1 PickyBiker, Jun 3, 2016
  2. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    DC 12v

    Pretty much it :)

    For a fan PWM changes the RMS effective value of the DC being sensed by the fan. More pulses->more DC (and less pulses -> less DC)
     
    #2 mark tomlinson, Jun 3, 2016
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  3. PickyBiker

    PickyBiker Active Member

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    So you are saying any fan will work, brush type, brushless etc. Correct?
     
    #3 PickyBiker, Jun 3, 2016
  4. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    If it is a 12v DC fan it will work. How quiet it is and how efficient it is are the price differences :)

    For example: Noctua makes great fans (not cheap ones, but good ones).
     
    #4 mark tomlinson, Jun 3, 2016
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  5. PickyBiker

    PickyBiker Active Member

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    Thank you!
     
    #5 PickyBiker, Jun 3, 2016
  6. Ryan TeGantvoort

    Ryan TeGantvoort Active Member

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    When I installed my dual fans, at first, I wanted quiet dual fans so I got the Scythe Mini Kaze fans and yes they were quiet but absolutely no air flow. So I have now replaced them with Evercool fans and they have been awesome.
     
    #6 Ryan TeGantvoort, Jun 9, 2016

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