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Thread: Which power supply would you recommend for this setup ? (<20w ?)

  1. #1
    n2k
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    Question Which power supply would you recommend for this setup ? (<20w ?)

    Hi, I've just replaced the mac mini that I was planing on installing in my car with a fit-pc2.

    according to the specs of the fit-pc2 it has a voltage tolerance of DC 8-15V.
    - 6W at low CPU load
    - <7W at 1080p H.264 playback
    - 8W at full CPU load
    - <1W at standby

    then I have 7" screen with a standard power consumption of ≤8W and power input DC 12V.


    I bought this for the mac mini:
    Carnetix CNX-P1900 140W Dual Output Power Regulator
    Carnetix CNX-P5V 15W +5V Regulator

    Is there a way to use the power supply I bought for the mac mini or is there a simpler/smaller way to go ? (the CNX-P1900 alot bigger then the fit-pc2)



    .n

  2. #2
    Variable Bitrate
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    I'm no expert on this, so take this for what it's worth. If it accepts a voltage range from 8-15V, couldn't you just hook it up to your vehicles power, without using a seperate DC-DC converter? You'd still want a shutdown controller, though.

  3. #3
    FLAC
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    if thats unregulated voltage rating, you can probably hook it up to your battery, though it may not survive cranking.
    Another choice would be using a POL device like this one here:
    http://store.mp3car.com/Automotive_P..._p/pwr-022.htm (you're close to the rated values, but it should work) (given no other usb peripheral are added) problem is you'll need to make your own startup/shutdown controller
    or make your own board! i'm sure others on this website would help if you have some experience in making your own board.
    finally you can use a really small psu like the m3atx and do a bit of hacking to make it work as a psu and startup shutdown for the 12V rail only.

  4. #4
    Variable Bitrate
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    You don't need to make your own startup/shutdown controller, you can buy one: http://store.mp3car.com/Automotive_S...ollers_s/9.htm

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