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  • 5v - 12v

    I have a TRUST 4port 2.0 USB hub, which has a green light on

    i need to give it some power, but whats the best way to get a 12v - 5v power thingy, to come on only at time the computer is on

    im using a laptop in a car.

    i just dont want to hook up 5v all the time (even when the cars off)

  • #2
    Something like this: http://store.mp3car.com/Carnetix_CNX..._p/pwr-016.htm
    Have you looked in the FAQ yet?
    How about the Wiki?



    Under normal circumstances, a signature would go here.

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    • #3
      Are you sure you need a powered hub? If not, some computers don't power the USB line when turned off. You may not need a power supply for your hub. Some computers, though, do power the USB hub even when off or in standby. Depends on your model.
      Originally posted by ghettocruzer
      I was gung ho on building a PC [until] just recently. However, between my new phone having internet and GPS and all...and this kit...Im starting to have trouble justfiying it haha.
      Want to:
      -Find out about the new iBug iPad install?
      -Find out about carPC's in just 5 minutes? View the Car PC 101 video

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      • #4
        its a nx9010 laptop base

        i had a flash drive in earlier, laptop off but the light cum on the pen drive once plugged in to the usb socket

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        • #5
          No, what you need is a 2A POSITIVE VOLTAGE REGULATOR, L78s05cv.
          http://www.datasheetcatalog.com/data...L78S05CV.shtml
          They keep 4.95V even if voltage in is fluctuating. I am using them myself to power my USB hubs in the car.

          An advise, use some simple heat sink to cool then, for example a chipset cooler from an old motherboard.

          Good luck!

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          • #6
            Originally posted by Sabbath View Post
            No, what you need is a 2A POSITIVE VOLTAGE REGULATOR, L78s05cv.
            http://www.datasheetcatalog.com/data...L78S05CV.shtml
            They keep 4.95V even if voltage in is fluctuating. I am using them myself to power my USB hubs in the car.

            An advise, use some simple heat sink to cool then, for example a chipset cooler from an old motherboard.

            Good luck!
            im interested in this as well. Might you have any pics of how these are setup with your system?

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