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Thread: Grounding Power Supply

  1. #1
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    Grounding Power Supply

    Long time reader, first time poster.

    I'm setting up a low-end system with a Dell 4600C that fits nicely under the front passenger seat. I've firmly decided on using an inverter for several reasons (yes, I know, I should get an opus...I will eventually).

    I realize that this setup is prone to noise...I tested it out using the cigarette lighter adapter, and noise is a serious issue. I'm assuming that once I wire the inverter to the battery and give it a solid ground, some of the noise will go away. There is, however, additional noise created when the computer is turned on.

    Can this be cured by grounding the power supply and/or case? If so, where on the power supply/case would I connect a wire to?

    Thanks in advance for any assistance...

  2. #2
    Raw Wave Confused's Avatar
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    Put a wire from the metal casing of the PC power supply to the same grounding point as the inverter and your audio equipment


    Garry
    Co-Developer of A.I.M.E.E
    www.aimee.cc

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    Anything else I need to worry about? Just find a screw in the casing, or solder something in place?

  4. #4
    Raw Wave Confused's Avatar
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    I just used one of the standard screws for mounting it into the case


    Garry
    Co-Developer of A.I.M.E.E
    www.aimee.cc

  5. #5
    Newbie gangrew's Avatar
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    You have to be careful when changing power supplies on Dells. I think they use proprietary motherboards and power supplies that only work together. Installing a regular ATX supply may damage your motherboard. This may not be an issue on all their pc's, but something to watch out for.

  6. #6
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    Quote Originally Posted by bumpincamry2.0
    Anything else I need to worry about? Just find a screw in the casing, or solder something in place?
    I would also make sure your ground is clean from paint and gunk. Some sanding with sand paper or a file will give you a clean ground.

  7. #7
    Maximum Bitrate jusatry's Avatar
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    Maybe a cheap USB sound card (creative MP3+). External sound cards always seem to help with the noise....

  8. #8
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    If it uses Dell's proprietary power supply you can use an adapter to make it a standard atx connecter. I believe the adapeters are available online.

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    Actually, I was going to stick with Dell's power supply...its rated at 160W. I doubt it's the most efficient power supply, but it seems to run fine off of the inverter (325W continuous, 600W peak).

    Thanks for all of the suggestions!

  10. #10
    Variable Bitrate Cherub211's Avatar
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    Quote Originally Posted by gangrew
    You have to be careful when changing power supplies on Dells. I think they use proprietary motherboards and power supplies that only work together. Installing a regular ATX supply may damage your motherboard. This may not be an issue on all their pc's, but something to watch out for.
    I would find this very unlikely because it would drastically increase the price of manufacutring the computers. They do use a proprietary case, which probably has special mounting points for a power supply which allow them to install things without screws. Gatway does this. But special power supplies and motherboards, you'd have to get up pretty early to convince me of that.

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