Schematic for Computer PS

Discussion in 'The Projects Forum' started by erice1984, Jun 10, 2007.

  1. erice1984

    Thread Starter Member

    Jun 9, 2007
    Anyone know where I might find a schematic for an Antec SL350?

    Had an idea to make a power supply for projects out of it since it is still good.
  2. John Luciani

    Active Member

    Apr 3, 2007
    The specifications for PC power supplies are at The regulation is typically 5%. In most new
    PC's there is an on board regulator that powers the CPU to a tighter
    tolerance. Some of the manufacturers produce supplies with tighter

    One issue is the minimum loads that these supplies require to maintain
    regulation. If you do not draw sufficient current the supply will go
    out of regulation. It is not clear (at least to me) what happens if
    the supply goes out of regulation. My concern was the output going
    high and tripping an output voltage OVP which may require some sort
    of reset.

    When you design your supply don't forget to pull the PSON# signal low
    to turn on the supply. PSON# is usually controlled by circuitry on the
    motherboard. Use the +5VSB to power any circuitry you need to have on
    all the time.

    If you do not need a lot of power I think you are better off with a
    wall-wart and some switching regulators.

    (* jcl *)
  3. ashokcp

    Active Member

    Mar 8, 2007
    Most of the PC power supplies are similiar. You could search the web. One such link where you could find some schematics & lots of useful stuff is (under computer power supplies)