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Thread: Does this power scheme make sense?

  1. #1
    Join Date
    Aug 2003

    Does this power scheme make sense?

    Alright, I am planning and pricing for my CarPC project, I see all these shutdown controllers and DC-DC power supplies. Does it make sense to run a DC-AC power inverter to a UPS battery backup to a standard AC computer power supply. That way the computer would still shutdown after the UPS loses constant power.

    The only thing that I could see wrong with this is NOT using a pure sine wave inverter, however I have read mixed opinions on whether this will cause problems or not.

    Also space is really not a big issue in this case

  2. #2
    Self proclaimed spoon feeder TruckinMP3's Avatar
    Join Date
    Jun 2002
    Not effecient and extra money for extra parts.
    D201GLY2, DC-DC power, 3.5 inch SATA

    Yes, you should search... and Yes, It has been covered before!

    Read the FAQ!

  3. #3
    Variable Bitrate proph's Avatar
    Join Date
    Aug 2005
    Little Elm, Texas

  4. #4
    Join Date
    Aug 2003
    I'm not sure I understand exactly how that is related to my question.... and it seems to me that it would be cheaper, whats not efficient about it ? The use of space? Like I said before there is plenty of space in this application.... Has anyone else done this ?

  5. #5
    Neither darque nor pervert DarquePervert's Avatar
    Join Date
    Apr 2004
    You can go right ahead with your UPS & inverter plan.
    We're teling you that it will work, but it's not going to be the best solution. While your outlay of cash may be less at first, you're going to get sick of all the electrical noise, fried inverters, battery drain, going to move it and it's too *(@#$!! big and heavy, hearing this heavy-assed UPS rolling/sliding/bouncing around wherever you put it despite your best efforts to secure it in place....

    At some point, you're going to realize how much LESS life yould suck if you'd listened in the first place and went with a DC-DC power supply.
    Have you looked in the FAQ yet?
    How about the Wiki?

    Under normal circumstances, a signature would go here.

  6. #6
    My man uses Levitra. Peoples's Avatar
    Join Date
    Dec 2004
    yeah this is covered all over the place....if you were to search you'd see a million topics about this
    PC Components:
    Lilliput; XPC/FLEX mobo; 1.7 ghz P4 Mobile;512 DDR; 160 gb HDD; opus 150; slot usb dvd-rw
    My work log

  7. #7
    Join Date
    Aug 2003
    Ok thats all I was trying to figure out, if it was really that bad of an idea or not, thanks guys

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