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Thread: Carnetix CNX-P1900 Dual Output 140 watt Regulator

  1. #11
    n2k is offline
    Low Bitrate n2k's Avatar
    Join Date
    Aug 2005
    I have an old CNX-1900 140W Dual Power I bought back in 2005 so It's probably version 1.0

    And now I have a fit-pc2 computer that accepts input of 8-15V and a 7" LCD that wants 12V.

    is possible to power these two with the CNX-1900 ?

  2. #12
    Variable Bitrate
    Join Date
    Jan 2008
    Southern Calif
    Typical Mac mini power diagram.

  3. #13
    Join Date
    Sep 2009

    Question Power cut out when engine is running??


    Just got my install ready and first time been playing with it while driving.

    I have a odd problem with my system. It runs smoothly when switching the ingnition on. But if i start the engine and let it play about a 1-5 minutes whole system gets cut off from power. Screen blanks and PC goes powerless. I believe it is not shutting down or anything. Just cuts them off... Starts again if the ign.key is turned again. Any ideas? Wrong jumper setting?

    Ill inspect it more tomorrow.

    Drove around for awhile with multimeter attached to Carnetix main power input (+ and ground). The voltage was quite low around 11 volts... (my alternator is not very good) and when the voltage dropped to near 10 V the Carnetix shut down the PC. My screen was away from its bezel and i could see the Carnetix and usb hub. From there i could se that PC was shut down fast but Carnetix red led was blinking and USB hub light was off short after that, so i believe it (Carnetix) did what is should have done when voltage drops =)

    So now i need to bring bigger + wire from battery, insert a fuse and check my alternator connections to juice up the power supply.

    Yep, i pulled a stronger + cable and it solved the problem. Yet need to upgrade my alternator but i keep the battery to charger over nights to have full batt avary day =)

  4. #14
    Variable Bitrate
    Join Date
    Sep 2003
    Austin, TX
    I have a P1900 from an old Mac Mini install and was wondering whether it can be used to power a 19V 2.1A DC netbook. It's well within the limits of power consumption but I haven't been able to find any examples of this combination/setup so I'm wary of trying it out just yet.

  5. #15
    Raw Wave SNOtwistR's Avatar
    Join Date
    Nov 2009
    Keswick,On Canada
    I don't see a problem with the 1900 powering a 19v laptop. i think the carnetix p-1900 puts out almost 10amp peak. You just need to get the right plug-end for your laptop. SNO

  6. #16
    FLAC PhilG's Avatar
    Join Date
    Mar 2009
    Ontario, Canada
    I am powering a full size HP laptop with no issues. You should be good to go. Just remember if you add a lot of USB devices without using separately powered hubs, all of those devices power requirements must be factored in to the draw on the 1900.
    My 2007 Ford F350 Work Log located HERE

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