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  • Power question

    I have got a 8" Lilliput screen and tried to power it up in the house using a 12V adaptor, now the screen would not output the PC's image and i thought the screen was broken, however i had a brainwave and took it to the car and plugged it in to the cig lighter using the adaptor supplied. Once hooked up to my laptop all was well (phew!) my question is does the 12v that the car outputs differ from the 12v the adaptor puts out (i'm no electrical guru) and if so is there any way to power up the screen in the house to work on the config, I dont want to keep taking it out to the car with a 75 foot extension cable for the PC

    Regards

  • #2
    What is the current rating of aforementioned 12v adapter?
    Old Systems retired due to new car
    New system at design/prototype stage on BeagleBoard.

    Comment


    • #3
      good question, its at home, i'll look tonight.

      Thanks

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      • #4
        Rob

        The only other stuff on the psu is "300mA"

        hth

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        • #5
          Originally posted by rev1richie View Post
          Rob

          The only other stuff on the psu is "300mA"

          hth
          There is your difference. 300mA is not enough to power that screen.
          Old Systems retired due to new car
          New system at design/prototype stage on BeagleBoard.

          Comment


          • #6
            Thanks Rob, how much do i need to power it so i can look for a suitable adaptor

            (Saw you website - cool)

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            • #7
              Look on the screen, or in the manual, it should say.
              Old Systems retired due to new car
              New system at design/prototype stage on BeagleBoard.

              Comment


              • #8
                Well the manual says 9W which if i remember my basic electronis, 9w/12v = .75 amps = 750 mA

                yes..no...

                regards

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                • #9
                  yes. Better to get something that can handle a bit more though, say 1A.
                  Old Systems retired due to new car
                  New system at design/prototype stage on BeagleBoard.

                  Comment

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