12 V power supply circuit

Discussion in 'Homework Help' started by Rut, Dec 14, 2014.

  1. Rut

    Thread Starter New Member

    Dec 11, 2014
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    I want to do a simulation for this circuit on multisim but something is wrong. Can sameone help me to do it on multisim?
     
  2. Jony130

    AAC Fanatic!

    Feb 17, 2009
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    Please attached a multisim file.
     
  3. Rut

    Thread Starter New Member

    Dec 11, 2014
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    This is multisim file. Maybe someone can help me to get the right output.
     
  4. Jony130

    AAC Fanatic!

    Feb 17, 2009
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    First try to remove from the circuit the main transformer and bridge. And add a 20V DC voltage source the input.
    And check if you get 12V at the output.
     
  5. Rut

    Thread Starter New Member

    Dec 11, 2014
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    Hm, I think something is wrong.
     
  6. Jony130

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    Feb 17, 2009
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    What is wrong? But after I look at your circuit I notice that you set V1 to 230V peak and your transformer ratio is 19.3 : 1.
    So this means that your input voltage is to low. AC mains voltage is 230V RMS = 326Vpeak. So please set V1 to 326V.
     
  7. Rut

    Thread Starter New Member

    Dec 11, 2014
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    Thank you. In the output talking abuot the voltage it's ok but the current is too high.
     
  8. Jony130

    AAC Fanatic!

    Feb 17, 2009
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    What do you mean by saying that "the current is too high"?
     
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