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lm338 overheating

Discussion in 'Electronic Basics' started by roadrunner_uk_98, Feb 13, 2007.

  1. Hi all
    i am using the lm 338 if i remember rightly the 5amp adjustable reg and have set it up to put out exactly 8.5v to runn my ps2 form the car, the problem is the ps2 only draws 2amps but the chip overheats in a matter of seconds, even when mounted on a mettal case, any ideas as to why this is happening. thanx all
     
  2. Phil Allison

    Phil Allison Guest

    "roadrunner_uk_98"

    ** Err .... an LM338T or LM 338K ??

    The K is in a TO3, all metal pack.


    if i remember rightly the 5amp adjustable reg and have set it up to put out
    exactly 8.5v to runn my ps2 form the car, the problem is the ps2 only draws
    2amps but the chip overheats in a matter of seconds, even when mounted on a
    mettal case, any ideas as to why this is happening. thanx all


    ** Err ... metal = what ?

    An old tin can or a proper aluminium heatsink.




    ....... Phil
     
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