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Thread: Plug wires into PSU

  1. #1
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    Plug wires into PSU

    I recently bought a homemade touch screen and the power connection is through a wire marked negative and one marked as positive, would this be possible for me to test by plugging it into an old computer power supply somehow?

    Sorry if this is a dumb question, I tried searching but I wasn't exactly sure how to word the problem right.

  2. #2
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    yes this is pefectally possible you would need to know if it was 12v or 5v, by looking at the invertors user manuel you should be able to work that out

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    Quote Originally Posted by coreyspeed View Post
    yes this is pefectally possible you would need to know if it was 12v or 5v, by looking at the invertors user manuel you should be able to work that out
    What if I was using a dc-dc power supply?

  4. #4
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    Quote Originally Posted by craig131 View Post
    What if I was using a dc-dc power supply?
    I think he meant the inverter that is built into the screen to produce the light. Either way, what model is the screen? You can probably find its power requirements in a manual online.

    If it runs on 12 volts which it most likely will, yellow wires on a computer power supply are +12v. The black wire right near it in a hard drive connector would be the negative. For 5 volts, look to the red wire and the black wire right near it.
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  5. #5
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    Quote Originally Posted by PaulF View Post
    I think he meant the inverter that is built into the screen to produce the light. Either way, what model is the screen? You can probably find its power requirements in a manual online.

    If it runs on 12 volts which it most likely will, yellow wires on a computer power supply are +12v. The black wire right near it in a hard drive connector would be the negative. For 5 volts, look to the red wire and the black wire right near it.
    That worked great, thanks

  6. #6
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    Quote Originally Posted by craig131 View Post
    That worked great, thanks
    Awesome, that's what I like to hear.
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