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AC/DC 12v Adapter Help

Discussion in 'General Hardware' started by paul maddix, Jan 12, 2013.

  1. paul maddix New Member

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    I have recently purchased a used p.c flt monitor with NO ADAPTER.
    This states that it requires a 12v 3.8a adapter.
    I have to hand a 12v 1000mA 12VA adapter.
    Another I have is a 12v Max 25va.

    Not knowing very much about electronics!
    Can I safely use either of these, or are they likely to cause any damage to my hardware?
     
    Last edited: Jan 12, 2013
  2. Frick

    Frick Fishfaced Nincompoop

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    If it causes damage it is to the adapter, but nothing else. You're about 2.8A short there, which is quite a lot. It might not even work, so you need a new adapter.
     
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  3. St.Alia-Of-The-Knife New Member

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    VA stands for volt amps
    In your case it roughly translate into watts so the second one is around 2amps, so not enough
     
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  4. paul maddix New Member

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    Thanks for the advice, I suspected that I would have to purchase a NEW ADAPTER!.
     
  5. Hellraiser1981 New Member

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    The adapters you have aren't nearly enough.
    Tap into your PC's power supply until you get a new adapter. 12v 3.8A = 45.6W or VA
     
  6. OneMoar

    OneMoar

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    thats actually not a bad idea ... if he knew what he was doing lol
     
  7. Hellraiser1981 New Member

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    It's easy enough to fold over a stripped wire and jam it in a molex. Yellow is +12v and Black is GND
    I've even powered car amps off PC PSU's lol
     
  8. de.das.dude

    de.das.dude Pro Indian Modder

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    just buy a new adapter for 12V, 60VA or 5Amps :)
    or make yourself one :)
     
  9. OneMoar

    OneMoar

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    actually the correct and safe way todo it would be to use a crimp on bullet connector ...
     
  10. paul maddix New Member

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    Thanks very much for the useful advice chaps.
    I will certainly try that, I think I have an old unused PSU around somewhere too.
     
  11. Frick

    Frick Fishfaced Nincompoop

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    Just be careful. If you dont know your way around electronics/electricity i recommend against it.
     
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  12. Hellraiser1981 New Member

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    Green wire to GND is PS-ON signal. Sure be careful, but PSU's have over current protect and doing this is very safe. Note some psu's will shut down if there is inadequate load on some rails.
     
  13. Frick

    Frick Fishfaced Nincompoop

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    how well those protection works depends on the PSU. If its a really really bad one it could be downright dangerous.
     

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