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mobile EFTPOS battery power supply

Discussion in 'Power Electronics' started by mark krawczuk, Dec 25, 2019.

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  1. mark krawczuk

    mark krawczuk

    8
    0
    Dec 17, 2015
    this is a eftpos charger from a vehicle. but looking at the input dc to the charger there is two seperate negatives... to the left you can see the red wire to charge sla battery , but the negative doesnt connect up to anything , just goes to the green power connector, can i just join both negatives together ?. i want to use it to power a low voltage led light.
     

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  2. Bluejets

    Bluejets

    3,779
    783
    Oct 5, 2014
    might be a split supply.... +12v ..Common....-12v

    What is on the other side of the board....?
    What does the power in unit look like.....?
     
    davenn likes this.
  3. Electro Bro

    Electro Bro

    6
    0
    Nov 22, 2019
    Could you please offer more information? Rated current and voltage?
     
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