please help me

Discussion in 'The Projects Forum' started by bmealhendi, Nov 10, 2009.

  1. bmealhendi

    Thread Starter New Member

    Mar 23, 2009
    8
    0
    hi every body, i want to design a power supply that generates +12&-12 volts from input voltage 220 rms
    i will be pleasure if any one help me with any idea


    thanks alot
     
  2. Papabravo

    Expert

    Feb 24, 2006
    10,143
    1,790
    Sure. Start with a center tapped transformer that will take 220VAC on the primary and have 24VAC Center Tapped on the secondary. This will be a good start for your power supply. Then find a bridge rectifier, or construct one out of 4 diodes. A pair of big capacitors come next, followed by a pair of fixed 3-terminal voltage regulators. Was that what you were looking for?
     
  3. SgtWookie

    Expert

    Jul 17, 2007
    22,182
    1,728
    Something like this circuit:

    [​IMG]
     
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