PSU in Multisim.

Discussion in 'The Projects Forum' started by BruceBly, Jun 8, 2013.

  1. BruceBly

    Thread Starter New Member

    Jul 26, 2012
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    I am trying to simulate a PSU in Multisim v12. Every time I turn the power on the fuse blows. I've changed it to a 50 AMP fuse and it still blows. I'm not sure what I am doing wrong. Can someone look at this and see if they can figure it out. I've included a picture and the Multisim v12 project file.

    Thanks
     
    • PSU.jpg
      PSU.jpg
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    • PSU.zip
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  2. BruceBly

    Thread Starter New Member

    Jul 26, 2012
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    0
    In the previous post I wired the LM317 wrong. I corrected it in this schematic but the same problems are present.
     
  3. Dodgydave

    Distinguished Member

    Jun 22, 2012
    4,967
    744
    So have you built this psu on a pcb, or is it still in software development?
     
  4. BruceBly

    Thread Starter New Member

    Jul 26, 2012
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    0
    I have it all completed except the transformer. It should be here sometime this week.
     
  5. tignmeg

    New Member

    Oct 17, 2012
    4
    0
    I'm no expert on multisim but it looks to me like a problem with the way multisim does the simulation.
    I loaded your circuit and played with it for quite a while but couldn't figure out why it overloads.
    I'll be interested to hear how your constructed circuit works when you've finished it.
     
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