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Distinguishing positive from negative

anossi Posted messages 2 Registration date   Status Member Last intervention   -  
anossi Posted messages 2 Registration date   Status Member Last intervention   -
Hello,
I would like to differentiate the positive wire from the negative one of a laptop charger; both are black, one with regularly spaced white stripes and the other completely black.

2 answers

  1.
    didmed Posted messages 2654 Registration date   Status Member Last intervention   845
     
    Hi,
    usually, the all black wire > it's the -

    To be sure, test the wires with a multimeter (at a computer repair shop or an electrician or a friend) using 'wire spikes' (which allow you to pierce the wire through the colored sheath):

    http://www.bricospirit.com/660-1274-thickbox/jeu-de-2-pique-fils-facom-1801j2pb.jpg

    http://static.letsbuyit.com/

    Catch you later, good evening. Didmed

    --

    If you need anything, just let me know!...
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