How can get negative from positive supply.

Discussion in 'General Electronics Chat' started by Audiofilo, Jul 15, 2008.

  1. Audiofilo

    Thread Starter Member

    Jul 15, 2008
    13
    0
    VHi EveryOne

    It´s my first post.
    I have a circuit which need +/-9V, but I want make only a single supply +9V. I remember saw years ago, a simple circuit for get negative supply from other positive. Can you help me ?

    regards
    Audiofilo
     
  2. bertus

    Administrator

    Apr 5, 2008
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  3. Wendy

    Moderator

    Mar 24, 2008
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    How much current do you need?
     
  4. Audiofilo

    Thread Starter Member

    Jul 15, 2008
    13
    0
    Hi, again, thank for prompt answer. Bill, it is for a triangular generator (use two Op Amp)which control a PLL 4046, I do not know how much current. Do you have some suggestion?regards
     
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