24v 10amp dc power supply?

Discussion in 'The Projects Forum' started by z120129, Sep 30, 2009.

  1. z120129

    Thread Starter New Member

    Sep 30, 2009
    2
    0
    Would it be possible to make a power supply that could be switched for 12, 18, and 24 volts and provide a current around or over 10amps?

    I know there are components like the lm317, but they are only able to supply 1.5amps.

    Thanks
     
  2. bountyhunter

    Well-Known Member

    Sep 7, 2009
    2,498
    507
    It's absolutely possible, but not with any integrated regulators. It would have to be a discrete design.
     
  3. bertus

    Administrator

    Apr 5, 2008
    15,649
    2,348
    Hello,

    There are regulators with higher current.
    There is the LT1085 for 3A,
    the LT1084 for 5A,
    and the LT1083 for 7.5 A.

    If you want more current there are applications where 2 are set parallel in the datasheet.

    Greetings,
    Bertus
     
  4. mik3

    Senior Member

    Feb 4, 2008
    4,846
    63
    LT1038 is a 10Amp linear adjustable regulator.
     
  5. Tahmid

    Active Member

    Jul 2, 2008
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    25
  6. z120129

    Thread Starter New Member

    Sep 30, 2009
    2
    0
    I guess maybe i should be more specific in the use, to get more tailored feedback;

    I have a couple of cordless tools (drill, saw, sawzall) that run on a 18v battery pack. My packs are all dead, or don't hold a charge at all. Obviously, I could just go get a new battery (which i will soon), but in the meantime, I was thinking it would be cool to be able to directly plug in the tools and use them as corded power tools. So the unit i would build would essentially be a 'fake battery'.

    That being said, huge heat sinks or fans would be a bit bulky (but could be accomodated for, if neccessary). I will plan on having an external transformer, but not built onto the unit - perhaps in line with the cord.

    Thanks all who have responded; I will look into those options.
     
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