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Thread: powering some usb devices

  1. #1
    Constant Bitrate cubanmoses's Avatar
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    powering some usb devices

    hey guys

    i was wondering how can i power the digitalww touchscreen, a usb soundcard and a external dvd drive with one sub port. i also have a pcmcia usb card. that card can't power the touchscreen or the soundcard, but it can power the dvd drive. what do i do about the usb soundcard, since i'm gonna have the touchscreen plugged into the one usb port?
    project: built, updating software
    comp: 1.67 ghz AMD, 1 gig of ram, 80 gb hd
    software: nlited xp, roadrunner
    screen: TM-701L touchscreen
    bluetooth keyboard
    Sony Xplod cdx-m630
    SB MP3 sound card
    future: gps with and navigation software

  2. #2
    Maximum Bitrate
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    USB Hub

    with or without external power.

  3. #3
    Variable Bitrate nzKAOSnz's Avatar
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    WITH
    had problems running one without

  4. #4
    Maximum Bitrate fluffy2097's Avatar
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    A powered USB hub should let you power everything just fine. Most of them run off 5volts. Make sure you have clean power for this 5 volts because it goes right out to your devices with little to no conditioning. If it surges, you'll fry everything on the hub and possibly your computer too.
    A digital mind lost in an analog world.

    Learn to ask smart questions!
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    My car PC: The Lost Cause!

  5. #5
    Constant Bitrate cubanmoses's Avatar
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    running it off an inverter would not be a good idea would it?
    project: built, updating software
    comp: 1.67 ghz AMD, 1 gig of ram, 80 gb hd
    software: nlited xp, roadrunner
    screen: TM-701L touchscreen
    bluetooth keyboard
    Sony Xplod cdx-m630
    SB MP3 sound card
    future: gps with and navigation software

  6. #6
    Newbie
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    if you have a good power inverter, it would be better than just running it with a DC stepdown power supply. the power inverter is less likely to surge than straight through the car's electrical system.

  7. #7
    Constant Bitrate cubanmoses's Avatar
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    what if i connect everything to a surge protector off my 90 watt inverter?
    project: built, updating software
    comp: 1.67 ghz AMD, 1 gig of ram, 80 gb hd
    software: nlited xp, roadrunner
    screen: TM-701L touchscreen
    bluetooth keyboard
    Sony Xplod cdx-m630
    SB MP3 sound card
    future: gps with and navigation software

  8. #8
    Maximum Bitrate fluffy2097's Avatar
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    If you use an inveter you should be more then fine. It will give you 2 levels of protection. The inveter itself, And then the wall wart that steps the power down to 5V DC. I wouldn't worry at all if you did it that way. The only thing is that using that sort of setup, you might get interference in your stereo system.
    A digital mind lost in an analog world.

    Learn to ask smart questions!
    http://www.catb.org/~esr/faqs/smart-questions.html

    My car PC: The Lost Cause!

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