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  • Newb, invertor question

    I have a 150w invertor to power my car pc i'm builing but it's draining the battery and cutting out the pc, when car is on. I've read up a bit on here and will invest in an opus but for the time being....Please help, am i missing a part/ set up wrong i dunno.
    mini itx 10000
    slim DVD
    80gb h'd
    Lilliput 7"
    150w dc to ac convertor wired to battery

    Thankyou and sorry if you've answered this Q a thousand times ive tried on search.

  • #2
    150w invertor - surely wouldnt be powerful enough for a PC I'm only just geting away with 500w

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    • #3
      I wouldnt think that that particular system would have any problems off 150W. I had a virtually identical system running off a ~70W sproggy mk2.8. (unless of course you are also pulling power for your screen off it). I say check your wiring, might be a short somewhere.
      90% Done
      60W DC-DC & shutdown controller
      Via C3 800, 512mb Ram, HDD 75GB IBM Deskstar, 5.6" In dash Dcustoms LCD w/ 3m USB Touch setup
      Rockfors 400s 400W amp,2x 10" Rockford Subs, Sony CDX M730 Head unit
      All in a shiny White 2000 V6 Mustang
      Click here to visit my NEW PhotoAlbum

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      • #4
        No screen runs off another feed...
        Damn it...???

        Comment


        • #5
          Does it work if you increase the revs?
          Ford Focus MP3 : www.stevieg.org/carpc Blog Updated 29 January 2009!
          Car PC Status: Complete - Undergoing Software Redevelopment

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          • #6
            If it isnt a power problem then it sounds like either an alternator or battery problem. If you say its draining when car is running then it def. sounds like alternator.
            Car: 1991 Camaro Z-28 5.0
            Computer:
            Carputer build 2: In progress - Epia 10000, 5.1 surround sound, front panel replacing 1.5 din radio, laptop or standard hdd???
            Future projects: GPS, Reverse camera using 4" monitor, PA System, FM/TV Tuner

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            • #7
              what car is it? What year? Have you had the battery or alternator replaced?

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              • #8
                I agree, you either have a bad battery, bad alternator, or a short somehwere.
                90% Done
                60W DC-DC & shutdown controller
                Via C3 800, 512mb Ram, HDD 75GB IBM Deskstar, 5.6" In dash Dcustoms LCD w/ 3m USB Touch setup
                Rockfors 400s 400W amp,2x 10" Rockford Subs, Sony CDX M730 Head unit
                All in a shiny White 2000 V6 Mustang
                Click here to visit my NEW PhotoAlbum

                Comment


                • #9
                  Most cars can only handle 130 watt without any drain. Anywhere above that will drain your battery even when the engine is running. However, I don't think your system consumes anywhere above 70-80 watts, so probably a bad battery. Those things happen you know
                  Oh, and make sure the inverter is NOT connected to the cars battery when you leave the car! Even if your PC is not working and it looks like there is no power, the inverter is still eating up power from your battery !! I had the same problem until I learned to remove the inverter from my cigarette plug.
                  00 Saturn SL2, boosted @ 8 psi - CarDomain
                  Newest install - my quickest ever
                  My 2nd carputer - b4 I broke the touchscreen
                  My very first carputer - voted the most ghetto

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                  • #10
                    Originally posted by bigrich
                    150w dc to ac convertor wired to battery
                    There is your problem! If it is wired to the battery then it consumes the power even when the engine is not running and the PC is shut down. You should make some sort of an ON/OFF switch and switch it off whenever you're not using it. If you read the inverter's manual you will see why it is important to do so.

                    Of course I might be wrong - I don't know what kind of inverter you have.
                    00 Saturn SL2, boosted @ 8 psi - CarDomain
                    Newest install - my quickest ever
                    My 2nd carputer - b4 I broke the touchscreen
                    My very first carputer - voted the most ghetto

                    Comment


                    • #11
                      Originally posted by bigrich
                      I have a 150w invertor to power my car pc i'm builing but it's draining the battery and cutting out the pc, when car is on. I've read up a bit on here and will invest in an opus but for the time being....Please help, am i missing a part/ set up wrong i dunno.
                      mini itx 10000
                      slim DVD
                      80gb h'd
                      Lilliput 7"
                      150w dc to ac convertor wired to battery

                      Thankyou and sorry if you've answered this Q a thousand times ive tried on search.
                      bigrich,

                      Yuriy is right. If you are wired to the battery without a switch in between, the the inverter will suck the power out of your battery. I have a 300W inverter on my setup with no problem. Cut the power wire only and put a Radio Shack 12v relay in between it. You could hook up straight to the ignition switch if you want. I personally run a power line to a switch in my dash. And then a line from the switch to the relay. This way the bigger power lines of the inverter feed its power. You can use a smaller gauge wire to "trip" the relay. That way when I want the system on, I push the switch, the inverter starts, and away we go. But it doesn't drain the battery when I am away from the car.

                      Batman
                      [email protected]
                      www.samshomepage.net

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