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help with potentiometers

Discussion in 'General Electronics Discussion' started by frazzled, Oct 13, 2011.

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  1. frazzled


    Oct 13, 2011
    Im making a bi directional speed controller from a kit 166. I want to replace the 100k potentiometer with a joystick potentiometer but can only find 5 and 10k joysticks at reasonable price. How easy would it be to change the circuit to allow use of a lower value potentiometer.
    Any help appreciated.
  2. OLIVE2222


    Oct 2, 2011
    This is just a voltage divider, so keeping the same ratio should be OK.
    giving for a 10K Pot R1=10K and R2 = 1K
    The tricky part is that a Joystick will not allow you to use the whole track resistance.
    Only, let say +/- 20° will be available on the 270° of the inside pot. So little tweak to plane.
  3. frazzled


    Oct 13, 2011
    thank you. I will try that....
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