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Thread: Just need 12V, no molex or ATX

  1. #1
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    Cool Just need 12V, no molex or ATX

    I've already d, but I think my needs are a little different from most.

    I need a good solid 12V for my SP-350, my Lilliput and an external hard disk. The SP-350 has an internal 2.5" drive and a DVD / CDR combo. The external drive is 3.5" and normally runs on a 12V AC/DC converter.

    I woud like it to survive craking and run while the engine is off; I will turn the equipment on and off myself. I have already read about the Opus and the ITPS. But I don't need the full ATX power connector and I need it available under 13.5V.

    This power regulator certainly looks like it would handle everything, and offers up to 500 watts as well! But the $100 price tag is a little daunting... I saw a surge suppressor at Radio Shack that had three cigratte lighter sockets and an LED. It looked like a gimmick to me and wouldn't handle under-voltage anyway. Radio Shack also had some small cigarett adapters that had selectors for various voltages (one of them being 12V). But I doubt such a thing would be able to drive all of my components.

    Am I doing something wrong here? Should these devices be able to connect directly to BATT/ACC? I know it can sway down to 10V and when the engine's running it can climb to 14V. So I think a direct-connect isnt't a good choice. The Lilliput has a rather small in-line regulator shaped like an egg, but that thing probably couldn't handle the load of all the other devices either could it?

    I don't have the skills to follow one of the well-developed schematics and build my own, so I'm looking for a pre-fab option here. Any thoughts are very welcome: you guys seem to be experts on this stuff.

    Regards,

    eXe

  2. #2
    FLAC ppgt94's Avatar
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    From your Cappuccino link:
    "12Volt DC power input that fit into automobiles boats and etc..."

    So that takes care of that. You can most likely use that to power the LCD as well. You can probably just use the 12v from the car for the LCD (I have it it works fine). For your external USB drive you could probably use a car power adapter from Rat Shack.

  3. #3
    pip
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    Look up Carnetix....would seem ideal
    EPoX mATX SocketA w/onboard Geforce4MX / 512MB PC2700 / AthlonXP 1600
    Lilliput / DVDrom / Opus 150W / WD 3.5" 160GB / SB Audigy NX
    XP home / Road Runner / iGuidance 4.0

  4. #4
    Raw Wave rando's Avatar
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    12V sproggy rail.

  5. #5
    Raw Wave Confused's Avatar
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    Quote Originally Posted by pip
    Look up Carnetix....would seem ideal
    Yep, I agree, can hook it up to the ignition (for full automation) and will provide you with constant 12V power throughout almost any condition (especially with that little load on it)


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

  6. #6
    pip
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    Quote Originally Posted by Confused
    Yep, I agree, can hook it up to the ignition (for full automation) and will provide you with constant 12V power throughout almost any condition (especially with that little load on it)


    Garry
    And perhaps a startup signal could turn the lilliput on?
    EPoX mATX SocketA w/onboard Geforce4MX / 512MB PC2700 / AthlonXP 1600
    Lilliput / DVDrom / Opus 150W / WD 3.5" 160GB / SB Audigy NX
    XP home / Road Runner / iGuidance 4.0

  7. #7
    Raw Wave Confused's Avatar
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    Use the dly-on from the Carnetix through a couple of relays to turn constant power to momentry power (like the first image here) which through another relay (hooked up to the momentary output) can make a connection for the Lilliput front-panel button.

    Otherwise, do the mod that Coyote posted on the forums to turn it on automatically when there is power


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

  8. #8
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    Thanks guys, I'll look more into the Carnetix. I think I saw it in Confused LillyEgg mod.

    Actually, my Lilliput has auto on/off based on VGA signal detection already. I plan to turn the devices on and off myself because there is a good chance that I'll want to pull into the garage at night and remote desktop into the thing over WiFi. If I find I never really do that, however, I'll look into those options.

    I did want to check one last time that you guys thought the Carnetix is a better option over the power regulator I found:

    http://www.powerstream.com/dc2.htm

    Assuming I don't need the automatic shutdown stuff and only care about regulation and low-power-drop-out, wouldn't the powerstream one be better? The reason I'm saying is because the powerstream only costs $10 more then the Carnetix but provides a constant 207 watts with up to 500 watt peek. The Carnetix is only 60 watt....

    With the external 3.5" HDD, the internal CD burner and 2.5" drive and the LCD, some oneline power calculator suggested I have a 210 watt power supply!!! Now, I'm sure they padded that ammount. But if it's even close, 60 watts won't cut it right?

    Thanks for all the help guys.

    eXe

  9. #9
    Raw Wave Confused's Avatar
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    Maybe I'm reading this wrong...but:

    Input Voltage Range 10 VDC to 14 VDC
    Output Voltage 13.8 Volts (adjustable to 15 volts by internal pot)


    Seems like you're not getting 12V out of it, but 13.8V, which is too much for your 12V components.

    2 drives, dvd burner and a screen aren't going to be using up 210W power. No way.


    The PC says it uses 5A max, but typically it will use probably 3A, and the external drive and screen won't overload it.


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

  10. #10
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    You're right about the 13.8V. Don't know what I was thinking. Is their website (http://www.carnetix.com) the best place to get them?

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