Negative voltage regulator

Discussion in 'Homework Help' started by selfbg, Feb 9, 2011.

  1. selfbg

    Thread Starter Member

    Jun 11, 2010
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    0
    Hello,
    I have to do negative voltage regulator using LM723. I've done da calculations, but I'm having problem to design the schematic. I've look all over the net but didnt find anything... :( Can someone help. I'm looking only for schematic. :)
     
  2. Jony130

    AAC Fanatic!

    Feb 17, 2009
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  3. selfbg

    Thread Starter Member

    Jun 11, 2010
    23
    0
    Yes, I did. I forget to tell that the load current is 6A, and the output voltage is -36V. So I need a external Darlington and extra voltage divider, but I dont know how exactly to connect them. :)
     
  4. Jony130

    AAC Fanatic!

    Feb 17, 2009
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    Design positive 36V/6A voltage regulator.
    Then convert the circuit to negative voltage regulator.
     
  5. selfbg

    Thread Starter Member

    Jun 11, 2010
    23
    0
    This is exactly my problem. How to do that?

    Connect the Vin to the Non-Inverting input and Vref to the Inverting input of the Op-Amp?

    Do I have to change the type of the transistors? (NPN or PNP)
     
  6. Jony130

    AAC Fanatic!

    Feb 17, 2009
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    Here you have a little tip
     
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