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  • inverter issue

    alright, i've bene using my laptop in the car and i couldn't figure out why it was going real slow. i start to mess around wiht a few things and i decide to unplug the inverter from the laptop and let it run off the battery. when i did this, everything worked fine and the laptop was up to speed, i hook it back up to the inverter and it slows up again. I have a 90 W inverter for a laptop, i thought that this would be plenty of juice for it. what can i do to solve this prob other than get another power supply.
    project: built, updating software
    comp: 1.67 ghz AMD, 1 gig of ram, 80 gb hd
    software: nlited xp, roadrunner
    screen: TM-701L touchscreen
    bluetooth keyboard
    Sony Xplod cdx-m630
    SB MP3 sound card
    future: gps with and navigation software

  • #2
    find out how many watts your laptop uses.. maybe it uses over 90W so like your cpu is slowing down due to that
    '98 Explorer Sport
    http://mp3car.zcentric.com (down atm)
    AMD 800mhz 192megs RAM 60gig hard drive 9 inch widescreen VGA
    80% done

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    • #3
      it says here, that it's 45 watts.

      http://www.bjassociates.com/2590CDTSpec.pdf

      this is the inverter

      http://www.bestbuy.com/site/olspage....4&type=product
      project: built, updating software
      comp: 1.67 ghz AMD, 1 gig of ram, 80 gb hd
      software: nlited xp, roadrunner
      screen: TM-701L touchscreen
      bluetooth keyboard
      Sony Xplod cdx-m630
      SB MP3 sound card
      future: gps with and navigation software

      Comment


      • #4
        I would use a filter or a small battery between the inverter and the laptop, the slowliness could be because of interferences....
        -NicGalla-
        custom-made aluminum case | MK2.8+ PSU | EPIA 800 | 256 Mb DDR | 120 Gb 7.2k WD | Wireless Chieftec mouse & keyb | Trust USB Keypad & USB webcam | Majestic TFT 7" 16:9 | WinXP & ME2 | connected to factory head-unit in a PT Cruiser 2.0L

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        • #5
          what type of battery or filter would work? i'm not experienced with this, and did some searching.
          project: built, updating software
          comp: 1.67 ghz AMD, 1 gig of ram, 80 gb hd
          software: nlited xp, roadrunner
          screen: TM-701L touchscreen
          bluetooth keyboard
          Sony Xplod cdx-m630
          SB MP3 sound card
          future: gps with and navigation software

          Comment


          • #6
            has anyone had this issue before? i've been searching and can't find an answer. i have the inverter plugged into the cigaretter lighter outlet, then the computer's power cable into the inverter. the inverter has plenty of power for the laptop, i can't figure out how to fix this problem.
            project: built, updating software
            comp: 1.67 ghz AMD, 1 gig of ram, 80 gb hd
            software: nlited xp, roadrunner
            screen: TM-701L touchscreen
            bluetooth keyboard
            Sony Xplod cdx-m630
            SB MP3 sound card
            future: gps with and navigation software

            Comment


            • #7
              c'mon guys, i know someone knows what to do in this situation. it shouldln't be cause of lack of power. could it be my cigarette slot, the inverter, etc??? it runs fine when it's running off its own battery though.
              project: built, updating software
              comp: 1.67 ghz AMD, 1 gig of ram, 80 gb hd
              software: nlited xp, roadrunner
              screen: TM-701L touchscreen
              bluetooth keyboard
              Sony Xplod cdx-m630
              SB MP3 sound card
              future: gps with and navigation software

              Comment


              • #8
                Maybe the wiring to the cig.adaptor is bad and it's getting a trickle of power .. I don't know... test to see what kind of power is at the adaptor..

                -Brad
                83 mp320i 285k
                -Brad
                83 mp320i
                99 mp323i
                _________

                7" Lilliput w/Touch, 150 W Opus, 2.4ghz P4 533fsb, 512 DDR 333mhz, GPS, WiFi Inet, 40g Maxtor 7200rpm, Laptop DVD/CD-RW w/USB2.0 Bridge, WinXP Pro.

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                • #9
                  Get a DC-DC supply for your laptop. Inverters put out horrible AC. I put a O scope on mine one time after it burned up a nicad charger I was using to charge up some AA batteries and the waveform looked about as much sinusoidal as I look like denise richards.
                  2002 Z-71 Rolling with an ITX MOBO, 10.4" touchscreen, 40 Gig HD, and a DVD ROM.

                  http://www.truckputer.com

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                  • #10
                    Originally posted by jpainter99
                    Get a DC-DC supply for your laptop. Inverters put out horrible AC. I put a O scope on mine one time after it burned up a nicad charger I was using to charge up some AA batteries and the waveform looked about as much sinusoidal as I look like denise richards.

                    That's not true ! You DO favor Denise Richards !
                    [H]4 Life
                    My next generation Front End is right on schedule.
                    It will be done sometime in the next generation.
                    I'm a lesbian too.
                    I am for hire!

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                    • #11
                      Not sure if it helps, but I'm setting up my own CarPC using a Dell Inspiron 7000 notebook and a 150W (pure sine) inverter.

                      When running the notebook off the inverter, the mouse pointer would move on its own of my finger hovered an inch or so above the touchpad. Also, I would get a mild tingling shock if I touched any of the exposed metal (VGA port, RS232 port etc) at the back of the notebook.

                      The problem was solved when I grounded the -ve pin of the notebook's AC brick (19V @ 3.5A) to GND (car chassis). Apparently, the inverter's Earth pin was not connected to anything and neither was the AC power brick. This fully floating arrangement led to large induced voltages (with reference to GND) on the notebook frame - I measured it at about 65 VAC and 4mA short-circuit current. The induced voltage does strange things to the notebook like causing the touchpad (which works on capacitance) to go hyper-sensitive.

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                      • #12
                        Why not just get the auto adapter for these laptops? Dell and Toshiba both offer direct plug in adapters, which would eliminate the inverter all together.
                        MP3 Cavalier - http://www.mp3cavalier.com
                        MP3 Grand Prix - http://www.mp3gp.com

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                        • #13
                          i can't explain it, but it's working fine now. i didn't do anything... it just started to work fine now. i think this laptop has a mind of its own. it's been working slow for a couple of weeks now, and the past 3 boots have worked fine for it.
                          project: built, updating software
                          comp: 1.67 ghz AMD, 1 gig of ram, 80 gb hd
                          software: nlited xp, roadrunner
                          screen: TM-701L touchscreen
                          bluetooth keyboard
                          Sony Xplod cdx-m630
                          SB MP3 sound card
                          future: gps with and navigation software

                          Comment

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