Power Injection question

Discussion in 'Power Supplies' started by sck1ng, Oct 18, 2014.

  1. sck1ng

    sck1ng Apprentice Elf

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    I was wondering that if I had a single PSU feeding a string of 200 pixels and had to power inject at the end of the string from the same PSU, do I only need +V connected or should I also connect the GND?
     
  2. nzlongfellow

    nzlongfellow Dennis from NZ

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    You need to connect both the +ve and Gnd at each end.
     
  3. mborg10

    mborg10 Michael Borg

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    That's right you need +ve and ground to complete the circuit, if easier you could inject in the middle at 100 pixels for same result
     
  4. Maple

    Maple New Elf

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    Im looking at something similar and wondering if this is correct:


    6 arches, each with 75 pixels.
    Each set of 2 arches will be off a single output of a pixlite, e.g. output x (power and data) to Arch y (y=1, 3 or 5). I need to feed power back in to the ends of each set of 2 (arch 2, 4 and 6). Can I just run a separate feed of + and - for each of these 3 from the same supply as powering the pixlite?

    [edit: previous was not entirely clear (or correct - it has been a while since I've put these together.)]
     

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