5v rail?

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  • yonu
    Senior Member
    • Nov 2007
    • 138
    • United States

    #1

    5v rail?

    simple question how to manufacturs get a 5v rail on a destop pc with say a 6amp rating the reason i ask is i have several dead psu and am in need of a 5v regulator that can handle 3 amps.

    Thanks,
    yonu
  • Scenic
    o.O
    • Sep 2007
    • 2642
    • Germany

    #2
    Re: 5v rail?

    Originally posted by yonu
    ... am in need of a 5v regulator that can handle 3 amps.

    Thanks,
    yonu
    get an 78H05
    5V @ 5A
    but AFAIK only available in TO3 packaging (?)

    if there's a chance that 2 amps are (barely) enough: 78S05

    had those in mind when i read your post because i recently converted a 5,25" USB casing from a dual voltage (5V/12V) PSU brick (toasted) to a single 12V unit..

    12V input simply gets regulated by an 78S05 (5V 2A) i mounted inside that aluminum casing (cooled by the (replaced and now quiet running) 40mm fan)

    that story is kinda off topic here though

    Comment

    • etnietering
      Badcaps Veteran
      • Apr 2009
      • 379
      • USA

      #3
      Re: 5v rail?

      78T05
      output 3A @ 5V
      http://search.digikey.com/scripts/Dk...e=LM78T05CT-ND
      you'll need some sort of heatsink, too

      Comment

      • yonu
        Senior Member
        • Nov 2007
        • 138
        • United States

        #4
        Re: 5v rail?

        thanks i will see if i can get either one locally I take it thought the best i will get without having to have a heatsink is 1A correct?

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