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Thread: power dropping out

  1. #1
    Join Date
    Apr 2011

    power dropping out

    hi mate. my name is kristian and i am from australia. i was referd to this forum for some help on my carputer setup i have.

    i have a gigabyte ga d525 tud atom board with 4gb of ddr3 ram and a 500gb samsung laptop. i cant seam to power the system at all properly. i am using one of these

    i can get it in to the car have it running but then it will shut off and then wont restart. i will have to remove the power supply and replace it back in to start it again.

    i think that the board thinks theres a brown out of power and shuts it off and puts it in to protection mode. but i am stumped with it i have tryed 2 power supplies, and i think its the varience in the current thats chucking it in to precetion mode.

    however i am running a dual battery system in my vehicle so the alternator should keep a charge to the second battery.

    if you can help that would be great. my carputer project has been going for months now and i just want to fix this powering issue

  2. #2
    Neither darque nor pervert DarquePervert's Avatar
    Join Date
    Apr 2004
    That PSU requires regulated 12vDC. Your car doesn't provide regulated 12v.
    Have you looked in the FAQ yet?
    How about the Wiki?

    Under normal circumstances, a signature would go here.

  3. #3
    Raw Wave
    Join Date
    Nov 2009
    But my car has a regulator for a 12 system....

    But that is NOT a REGULATED 12V supply which means a voltage regulated to 12V.
    That may mean 12V +/-0.1V or +/-0.5V, but not the usual ~12.5V to 14.5V of a 12V vehicle or the typical 8V - 16V range experienced when cranking with old batteries (can be 8V or lower) or initial and transient over-voltages (14.5-16V).

    But there are several suitable automotive 12V dc-dc converters (ATX supplies etc) that are purpose built for PC applications. And even I am impressed with their programmable features (and I'm a very fussy Aussie - but I'll leave recommendations for the others hereon with far greater knowledge than me in that area).

    BTW - the summary of this reply is "DarquePervert x 2!".
    I'm just pre-empting confusion between a regulated 12V supply and a regulated 12V system.

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