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12V from car -> 5V 7Amps ???

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  • 12V from car -> 5V 7Amps ???

    12V from car -> 5V 7Amps ???

    just wondering how i would go about this.

    I know you can get 5v 5amp regulators but i am a bit of a noob when it come to electronics.

  • #2
    well... i cant answer the question ...

    but why did you steal that domo avatar from bgoodman?

    ~mike
    Single Member of the "1000 Post and No MP3 Car" Club
    PROJECT ON INDEFINATE HOLD... BOUGHT A HOUSE
    2000 Cavalier Z24 [###-------] Only 30% Done ... Still

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    • #3
      He thefted my avatar....
      ODYSSEY

      Originally posted by Tidder
      Hey, as long as it's not any particular race I'm offending, I can stand to be a pedophile.
      All information expressed in this post is my opinion, and should not be regarded as a statement of fact.
      Digital-Car UK|

      (\__/)
      (='.'=)
      (")_(")

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      • #4
        You're forgetting that you need -12V to......
        look at this: http://schapenstal.homeip.net/alcas/index.php?2

        Jospfh
        Free circuit designs at www.circuitdb.com!

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        • #5
          thats but all that is very complicated and i only need the +5v section as the SBC board i have only requires that and ground

          edit: and sorry about the avatar, i just picked one from the list. I have changed it back to nothing

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          • #6
            Originally posted by gdunkley84
            edit: and sorry about the avatar, i just picked one from the list. I have changed it back to nothing
            sorry... just screwing with you!!! i didnt know it was on the list... i thought it was an original...

            ~Mike
            Single Member of the "1000 Post and No MP3 Car" Club
            PROJECT ON INDEFINATE HOLD... BOUGHT A HOUSE
            2000 Cavalier Z24 [###-------] Only 30% Done ... Still

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            • #7
              Hi,

              Ah, I didn't know your computer only required the +5V.
              I'va done a search in google on "DC DC converter 12V 5V" and found a 40W 12V to 5V (8A) converter:
              http://www.elektroautomatik.de/pdfenglish/page61-65.pdf
              It's a german company but I'm pretty sure there are more companies on the world selling those things. So just do a search and you will fing one suitable for you.
              With such an converter the only thing you need is a fuse, I think. Place it between the converter and your battery. 40W devided by 12V is 3.3A, so use a slow blow fuse that is about 5A. You don't want to blow your fuse because of the peak current when powering it on .

              Good luck!
              Free circuit designs at www.circuitdb.com!

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              • #8
                Get some vero board, and build this circuit, combine two of them to get 10amp, more than enough. Should be around $15US to knock this up.
                -------------------------------------------
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                Kenwood KVC-1000r In-Dash LCD. x-10 MouseRemote. Destinator V2 Gps. DC-DC with onboard Shutdown controller.
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