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Will too many amps fry my computer?

Discussion in 'Electronic Basics' started by [email protected], Jul 12, 2007.

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  1. Guest

    Hi,

    I just bought a replacement AC power adapter and the amps are slightly
    higher than the original (3.4 versus 3.16). As long as the voltage is
    the same (19v), it should be fine right? If I remember correctly, the
    max output is Volts x amps and my computer will draw what it needs.
    My biggest concern is frying the wire.
     
  2. Eeyore

    Eeyore Guest

    Yes.

    Graham
     
  3. Lord Garth

    Lord Garth Guest

    Insure the polarity is correct and that the replacement is a REGULATED
    19 volt supply.
     
  4. Bob Dent

    Bob Dent Guest

    The extra current capability of the new power supply will only be
    supplied if needed. The assumption must be that your original power
    supply was enough for the load, so for the same voltage your new supply
    will putting out the same current as before.
    So you are correct.

    Bob

    www.bitsbox.co.uk
    Electronic components for the hobbyist.
     
  5. default

    default Guest

    Should be fine. There are exceptions like battery chargers - but even
    in that case you should be good to go.

    You won't fry wire with that power differential unless the original
    wire was giving off heat or light . . .

    "AC power adapter" and "DC power adapter" aren't the same. In some
    cases you can use a DC in place of an AC and visa versa - but if
    that's the case tell us.
     

  6. Have you seen any 3 A supplies that weren't regulated?


    --
    Service to my country? Been there, Done that, and I've got my DD214 to
    prove it.
    Member of DAV #85.

    Michael A. Terrell
    Central Florida
     
  7. Lord Garth

    Lord Garth Guest

    Point taken but I was thinking some schmo would call a bridge and a cap
    regulated.
     
  8. neon

    neon

    1,325
    0
    Oct 21, 2006
    as long s the voltage is the same as before 19v you are ok even with 100 amp input . some talk about regulation for AC there is none the internal power supply will take the 19v ac and regulate from there. the only way you can fry your item is the is a short internaly but then it doesn't work does it. the other way around it will not work rsay it require 5 amps and your source is only 3 amps the voltage will surely decrease and the item might not even come up eventualy you will fry the source with heat.
     
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