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Thread: What to buy-Voltage Regulator...Swear i searched:)

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    What to buy-Voltage Regulator...Swear i searched:)

    First off, thanks guys for all your help...many many threads of interesting topics and ideas. Please by kind , as I know there are HUNDREDS of threads like this, but you must admit, no real answers. If I go to radio shack now, and ask for some LM1084 regulators, do I just wire them to the + and - wires coming from my powersupply goin to the cig lighter wires ive spliced into. Im goin dc-dc with a ps from the minicases from caselogic. Will this take care of the interference on my screen, prob due to spikes? Thanks again, I appreciate any ideas.

    Do I use those cig wireswires with the regulators? Also appreciate a price idea, are these things like a buck each, or am I lookin at expensive. From what I have read they must be cheap, since they are not the greatest way to protect the computer. If people know of a better way to also fix the crappy display I get from my computer, when external vcr worked fine, please let me know. I cant see putting this money in and having it look like it does.

    Edit: Im an electrical noob..and have no idea what this diagram is trelling me Different link with helpful advice

  2. #2
    Maximum Bitrate eugenen's Avatar
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    Rat shack does not have the LM1084. They will have the non low drop out 7812 or lm340t-12, but thay don't carry the LDO's. If your having interference on a display you may just need a filter cap on the display power in to fix it or a better vga cable.

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    Do the ones you listed work for a voltage regulator? Or does anyone know where I could get ones that will work online?

    As for the display problem, its def on the computers end. My screen is just composite, but if I take the same composite cable, using a vcr plugged into a wall in my garage, picture is great. When I use the computer, with the same composite...it looks like crap, as I get alot of interference, especially when the harddrive is in use. I was hoping a refulator of some sort would help supply clean power. Thanks

  4. #4
    Maximum Bitrate eugenen's Avatar
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    The 7812 and Lm340t-12 are both three pin voltage regulators. They take about a 2v overhead so you have to keep a constant 14v in. The lm1084-12 is a 12v low drop out, it works the same as the others but will operate off of 13v. Give more detailes on your computer. You may just need to filter the incoming voltage some more, or ground the case.

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    1st off, thanks for all your help...I really appreciate it. And also thanks for reminding me, I was gonna try to move the ground wire just in case....but forgot all about it, so will try tomorrow morning.

    Here are some specs you asked for.

    epia 800mhz motherboard
    Slim Drive 8Xdvd
    512MB Ram
    20GB HD...am trying to not go with a notebook HD as I had this..so far it works.
    Sony xav-7w in dash screen. its a radio so power has nothing to do with computer
    This is what im conecting the cig lighter wires with the computer. It was a 5 min test, and didnt blow anything, but for all I know its a fire hazard, lol, uh, yeah. So I dont even know if this can work. I may just break down and shell out the 150$ for that opus.

    www.dc2dc.com

  6. #6
    Maximum Bitrate eugenen's Avatar
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    Wht about the case, bought / built? Is it metal/wood/plexiglass?

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