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Max ampere will blow my device?

Discussion in 'Electronic Basics' started by AcCeSsDeNiEd, Jan 7, 2005.

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  1. AcCeSsDeNiEd

    AcCeSsDeNiEd Guest

    Hi guys. I have a LCD monitor. I lost the power adaptor for it.
    I bought a replacement.

    My LCD monitor power requirements are: 24V DC, 2.4A

    My power adaptor is: 24V DC, 5A Max.

    Question is, if the adaptor is 5A max, will it blow my LCD monitor?


    To e-mail, remove the obvious
  2. No, it's fine. Your monitor draws only what it needs, which is less than

    Robert Monsen

    "Your Highness, I have no need of this hypothesis."
    - Pierre Laplace (1749-1827), to Napoleon,
    on why his works on celestial mechanics make no mention of God.
  3. Maybe, but not likely. It partly depends on whether the original
    supply was regulated or not.

    The question is how much voltage does the new unit produce with load
    current much less than its maximum specification. If it is regulated,
    no problem. I would want to test it for no load output voltage and
    with a dummy load that pulled something near the rating of the old
    supply (a big 10 ohm resistor, perhaps). If there is less than a
    couple volts extra (10 extra) at no load, it shouldn't do damage.
  4. Don Bruder

    Don Bruder Guest

    Not likely. Amp requirement is a minimum, not a maximum. A
    bigger-than-required amp capacity will simply go unused, doing no harm.
    A lower-than-required capacity may very well cook the supply, but
    *USUALLY* won't do any harm to the device. Note the stress on
  5. Ross Mac

    Ross Mac Guest

    I went through this excercise with an accountant that thought he knew
    something about electronics. We installed a larger than necesary power
    supply on a PC just for the reliability factor.I explained to him that is
    was a power supply not a power demand.....I don't think he ever quite "got
    Yeah, it should be fine.....Ross
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