[RESOLVED] PSU
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Thread: [RESOLVED] PSU

  1. April 4th, 2010, 04:38 PM #1
    rbc1100
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    Resolved [RESOLVED] PSU

    Hello folks, I have a couple of spare psu's laying about. I want to convert one to a 12 volt power supply to charge R/C batterys. I have a new battery charger I bought to do this but it needs a 12v power source. I have a 350W antec psu rated at 20 amps. The psu works when I plug it into a main board and the 12v rail is fine. what I need to know is how to jumper the connector so I can use it as i get no voltage readings when its notplugged into a mainboard. thanks
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  2. April 4th, 2010, 04:52 PM #2
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    SuperSparks
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    This shows you how:

    Be aware that switch-mode power supplies must have a load connected to them, if you run it without a load for any length of time you stand a good chance of burning it out. And you need a load on the 12v, 5v and 3.3v rails.
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  3. April 4th, 2010, 08:40 PM #3
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    crunchie
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    Quote Originally Posted by SuperSparks View Post
    This shows you how:

    Be aware that switch-mode power supplies must have a load connected to them, if you run it without a load for any length of time you stand a good chance of burning it out. And you need a load on the 12v, 5v and 3.3v rails.
    Methinks there is something missing there
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  4. April 5th, 2010, 10:44 AM #4
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    SuperSparks
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    Opps, sorry about that

    ATX Power Supplies
    Nick.
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  6. April 5th, 2010, 11:10 AM #5
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    jdc2000
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    SS - That link appears to be dead.

    These might work:

    http://www.techpowerup.com/articles/other/22

    http://www.wikihow.com/Convert-a-Com...b-Power-Supply
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  7. April 5th, 2010, 06:27 PM #6
    rbc1100
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    Thanks for the replies folks, I ordered a 30 amp dc power supply from tower hobbies. I needed it to run the charger i have for the battery packs in my r/c airplanes. Its better this way as its all plug and play no worries about trying to modify a computer psu. thanks
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  8. April 6th, 2010, 10:46 AM #7
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    That's probably the safest option.
    Nick.
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