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Powering 12 volts lights from 5 volt power supply

Discussion in 'Power Supplies' started by dpavisic, Jul 27, 2013.

  1. dpavisic

    dpavisic Full Time Elf

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    Hi guys I have a spinner with strip for the arms which runs on 5 volt and also some 12 volt square pixels in the middle which run from 12 volts. Is it possible to run both from the same PS?
     
  2. David_AVD

    David_AVD Bite my shiny metal ass!

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    You could you a 12V power supply and use a regulator to drop it down to 5V. How much current do you need for the 5V load?

    To use a 5V power supply with 12V loads, you'd need a boost converter. They are not as common.
     
  3. damo1271

    damo1271 Full Time Elf Generous Elf

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    dpavisic

    dpavisic Full Time Elf

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    Lucky I checked my strip after you guys asked for how much current it uses, as I now realise it is in fact 12 volt strip so I won't need the converter after all. Good to know for the future though. Thanks for your responses
     
  5. remoteutah

    remoteutah Full Time Elf

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    PC power supply has 12v, 5v and 3.3v. Use a meter to find your outputs on the molex plugs. On the 20/24 pin connector, cut the green wire right at the plug and ANY black wire. Put a switch between those two wires (the green and the black). There... now you have a 12 & 5 volt power supply with a power switch!
     

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