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

  1. 02-28-2003, 06:54 AM #1
    gdunkley84
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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.
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  2. 02-28-2003, 10:58 AM #2
    mp3z24
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    well... i cant answer the question ...

    but why did you steal that domo avatar from bgoodman?

    ~mike
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  3. 02-28-2003, 01:19 PM #3
    ODYSSEY
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    He thefted my avatar....
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  4. 03-04-2003, 07:25 AM #4
    jospfh
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    You're forgetting that you need -12V to......
    look at this: http://schapenstal.homeip.net/alcas/index.php?2

    Jospfh
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  5. 03-04-2003, 07:41 AM #5
    gdunkley84
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    Talking

    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. 03-04-2003, 09:47 AM #6
    mp3z24
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    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...

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  7. 03-05-2003, 06:01 AM #7
    jospfh
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    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!
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  8. 03-06-2003, 10:15 AM #8
    phil.45
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    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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