STX16803 current surge?

Discussion in 'STX and STXL' started by blackdragon72, Jun 25, 2020.

  1. blackdragon72

    blackdragon72 Standard User

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    According to user manual, pin 2,3,4 are ground, pin 1,5,6 are 12V. I measured AC adapter output, pin 1, 5 are 12V, pin 6 has no output. pin 2 and 4 seems tied off internally (no resistance between 2 and 4), pin3 seems open.

    Should pin 3 and pin 6 be left open when I build my own cable?
     
  2. Doug

    Doug Staff Member

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    No. Connect all three. That is safest.
     
  3. blackdragon72

    blackdragon72 Standard User

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    I connected only 2 pins (pin2 and 4) and left pin 3 open.

    The problem is solved if I connect all 3 ground pins. Not sure how connecting all 3 pins to ground helps but it does fix the issue (pin 2-4 seems short together internally in CCD).
     
  4. Doug

    Doug Staff Member

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    If you only connect only one pin for +12V, you are exceeding its rated current capacity. It might work well enough now, but it may also be damaged long-term.
     
  5. blackdragon72

    blackdragon72 Standard User

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    I connect 2 12V, same as AC adapter outputs.
     
  6. blackdragon72

    blackdragon72 Standard User

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    BTW, what is the rated current capacity for each pin?
     
  7. Doug

    Doug Staff Member

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    Okay if you have at least 2 connected on each side, it should be okay, but 3 is better.
     
  8. blackdragon72

    blackdragon72 Standard User

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    Got it.

    But I still dont understand why connecting only 2 ground pins would blow the fuse, while connecting all 3 works fine. The AC adapter has only 4 pins anyway (prior to 4 ->6 pin cable)
     
  9. Doug

    Doug Staff Member

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    It won't blow the fuse, unless you short the connector to the shell.
     

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