Building a split power supply from a 12VDC source

Discussion in 'General Electronics Chat' started by eeprom, Feb 12, 2011.

  1. eeprom

    Thread Starter New Member

    Feb 12, 2011
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    Hello,
    I have a single 12VDC supply, and I need to break this into two supplies +4.5VDC and -4.5 volts VDC so that I can run some op amps. I could use some help on this. Thanks.

    ee
     
  2. R!f@@

    AAC Fanatic!

    Apr 2, 2009
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    Welcome to AAC.

    For that u need a DC to DC converter. Since you asking the question I do not think you can make one.
    Better buy a dual supply or try to make one from salvaged parts.
     
  3. SgtWookie

    Expert

    Jul 17, 2007
    22,182
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    Rif@@, there are more options than that.

    eeprom,
    Is the +/-4.5v the absolute limits for your supply voltages, or could you use +/-6v?

    Do you know what your current requirements are?
     
  4. t06afre

    AAC Fanatic!

    May 11, 2009
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    What kind of current do you need. If you only need modest current like in mA range you may google "virtual ground circuit"
     
  5. R!f@@

    AAC Fanatic!

    Apr 2, 2009
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    I know Sgt..I was just starting to ask him what OP has and what level of experience OP has to make such a thing
     
  6. Jaguarjoe

    Active Member

    Apr 7, 2010
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  7. thatoneguy

    AAC Fanatic!

    Feb 19, 2009
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    That is a low price for a useful device!
     
  8. Jaguarjoe

    Active Member

    Apr 7, 2010
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    Sticker price on these are $60 or so.
     
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