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Testing 24V Meanwelll Power Supply

Discussion in 'General Electronics' started by ajg, Oct 25, 2019.

  1. ajg

    ajg New
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    Hi all,

    I was testing to see if my power supply puts out the stated 24V, and I was disappointed to see that my multi-meter read essentially zero. I double checked that my meter did read high voltage by reading the voltage from the wall socket. Also, I took apart the power supply to ensure that I connected all the wires correctly (as per the build video).

    Is there anything else I can do to diagnose issues with my power supply? How do I know if it is time to get a new one?

    Thanks in advance!
     
  2. jeffmorris

    jeffmorris Well-Known
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    Is the 110/220 switch set correctly for your country?
     
    Peter Van Der Walt likes this.
  3. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
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    Jeff is most likely spot on! Note the big yellow sticker on the top with an arrow pointing to the switch, with instructions on it to check and set your voltage selector switch before use :)
     
  4. ajg

    ajg New
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    That was it! Thank you for your help!
     
  5. jeffmorris

    jeffmorris Well-Known
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    What if someone plugs a 110V device into 220V socket?
     
  6. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
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    It has a voltage selector switch and a big warning sticker :)
    So just dont? :)

    They ship with 230v setting as default (which doesnt turn on on 110v) - not sure if the other way round goes into protection or blows the onboard fuse, but one shouldnt ignore the big yellow warning stickers (;
     
    Giarc likes this.

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