Slide Potentiometers resistance...
Page 1 of 2 12 LastLast
Results 1 to 10 of 11
  1. #1
    Tech Wizard
    Join Date
    Jan 2009
    Location
    Brisbane, Australia / Berlin, Germany
    Posts
    78

    Default Slide Potentiometers resistance...

    Hi i am modding my midi mixer and would like to change the slide potentiometers. there are lots of them available however they all come in different resistances. how can i figure out what resistance would be the right one.
    its a small usb powered midi controller. the cable used are really small, so i think the resistance has to be really low. how can i measure the actual intensity and what else do i need to calculate the resistance. afaik its intensity I and power P which would be the easiest to measure.

    Spannung U = Volt V
    Stromstärke I = Ampere A
    Widerstand R = Ohm Ω
    Leistung P = Watt W


  2. #2
    Tech Wizard
    Join Date
    Jan 2009
    Location
    Brisbane, Australia / Berlin, Germany
    Posts
    78

    Default

    could it be, that if its usb powered and thus delivers +5Volt at 500mA the resistance is 5/0.5 = 10 ohm which means the maximum resistance of the slidepotentiometer i can buy has 10 ohm right

  3. #3
    Tech Wizard
    Join Date
    Jan 2009
    Location
    Brisbane, Australia / Berlin, Germany
    Posts
    78

    Default

    hm the smallest slide potentiometer i cna find online have 1000 ohm ??? going up to 1.000.000 ohm... :-/ something must be wrong in my calculations then

  4. #4
    Tech Mentor Anthony More's Avatar
    Join Date
    Apr 2008
    Location
    Eindhoven,The Netherlands
    Posts
    225

    Default

    I think 10k is good.
    as comparison;In the vci-100 all potentiometers/sliders are 10k.
    and its also usb powered.
    Macbookpro 2.4 i5 4gb
    Traktor Pro 1.2.6.
    Black VCI-100 Mod firmware 1.3
    Presonus Firebox

  5. #5
    Tech Wizard
    Join Date
    Jan 2009
    Location
    Brisbane, Australia / Berlin, Germany
    Posts
    78

    Default

    thank you, another opinion would be appreciated.

  6. #6
    Tech Wizard
    Join Date
    Jan 2009
    Location
    Brisbane, Australia / Berlin, Germany
    Posts
    78

    Default

    btw anthony, how do you know that the vci ones are 10K ?

  7. #7
    Tech Mentor Anthony More's Avatar
    Join Date
    Apr 2008
    Location
    Eindhoven,The Netherlands
    Posts
    225

    Default

    Quote Originally Posted by KLOSELINE View Post
    btw anthony, how do you know that the vci ones are 10K ?
    Look here;
    http://www.djtechtools.com/forum/showthread.php?t=2545
    Macbookpro 2.4 i5 4gb
    Traktor Pro 1.2.6.
    Black VCI-100 Mod firmware 1.3
    Presonus Firebox

  8. #8
    Tech Wizard
    Join Date
    Jan 2009
    Location
    Brisbane, Australia / Berlin, Germany
    Posts
    78

    Default

    hey what i meant is, can i see on the faders whats the ohm, so i coudl figure out how much ohm sliders are installed in my midi controller.

  9. #9
    Tech Mentor Anthony More's Avatar
    Join Date
    Apr 2008
    Location
    Eindhoven,The Netherlands
    Posts
    225

    Default

    Quote Originally Posted by KLOSELINE View Post
    hey what i meant is, can i see on the faders whats the ohm, so i coudl figure out how much ohm sliders are installed in my midi controller.
    I don't know what controller you have and what sort of faders.
    You have to open up the controller, take the fader out, and take a close look
    at it.
    Look for some code.
    Or try to find an similar fader on the market (mouser,Farnell),and compare
    for specs.
    This is the way I did It.
    Macbookpro 2.4 i5 4gb
    Traktor Pro 1.2.6.
    Black VCI-100 Mod firmware 1.3
    Presonus Firebox

  10. #10
    DJTT Super Moderator midifidler's Avatar
    Join Date
    Mar 2008
    Location
    San Francisco
    Posts
    1,904

    Default

    Pots are balanced so the resistance only matters to limit current.

    10 K will be fine in all situations.

Page 1 of 2 12 LastLast

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •