Adaptor for Laptop...

Discussion in 'General Electronics Chat' started by placemat, May 19, 2017.

  1. placemat

    placemat

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    Hello, I've been kindly given a laptop which I reinstall and give away. Unfortunately there is no PSU with it. The input on the back of the laptop says 19v = 4.74A. I have found a PSU on the net but it says 19v 3.42A.
    Will this PSU be OK to power the laptop?
    Many thanks,
    Steve.
     
    placemat, May 19, 2017
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  2. placemat

    davenn Moderator

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    it will probably be struggling to supply the lappy and will run very hot
    get one with the same or higher current capability
     
    davenn, May 20, 2017
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  3. placemat

    liamlogan

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    Apply simple funda
    I=v/r
    Think how 3.42A will equal to the 4.74A?
     
    liamlogan, May 21, 2017
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