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Silverstone FM121 fan and Pot Controller

Discussion in 'Cases, Modding & Electronics' started by PAPADOC, Dec 12, 2008.

  1. PAPADOC New Member

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    Hello,


    I find the stock Pot on the FM121 not too precise.

    Hence I want to change it with a potentionmeter that is more precise,

    can anyone tell me what potentionmeter I will need for this, like what range?

    Thanks

    Chris
  2. Fitseries3

    Fitseries3 Eleet Hardware Junkie

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    CD could tell you the answer to that one. although... i think he uses the silverstone ones quite a bit. i like them myself.

    how precise do you need?
  3. PAPADOC New Member

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    I guess 2x the stock range would be nice
  4. PAPADOC New Member

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    FM 121 Pots

    Ok i calculated the pot included with the FM-121 fan

    it's range is : 0 Ohms to 10K Ohms

    Now i calculated the resistance of the fan at 30 Ohms

    and for me to get the fan down to 7VDC (it's starting voltage)

    I need to add about 22 Ohms

    So i guess a Pot of 20 Ohms should be perfect Right?

    I can reduce the pot to 0 resistance to get the full 12V
    and then when I max out the pot I should get a tad above 7VDC right?

    Please correct me if I'm wrong

    Thanks !

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