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Fixed My Buzzing with AC Inverter

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  • Fixed My Buzzing with AC Inverter

    I have my first pass laptop mp3 player in my car.

    I bought a 225kw ac -dc inverter from Target for $29. It had some sine wave thing on it. I use a Armada Laptop 1500, which uses 110v ac and the goes to 18v and 5v dc in the plug,

    I play back to the stereo using an irock....

    Experimenting I noticed when I plugged the irock using the 12v lighter there was a buzz at all volumes but not increasing with the RPM. I knew it was a ground. When I used the irock with batteries it went away. I knew then that the DC power coming into the irock and therefore grounding through the headphone was floating compared to the DC AC AC DC on the inverter side. I grounded the irock to the laptop frame

    No more buzz!!!!!

  • #2
    Originally posted by jjcuff1
    I bought a 225kw ac -dc inverter from Target for $29.
    So you bought a 225,000 watt invertor for $29...
    [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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    • #3
      that is a hell of a deal. by the way.

      What of the Irock did you ground? ground of line out or what?

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      • #4
        i could power a lot of stuff of 225,000 watt........
        Current Status: For Sale

        Specs
        - 1.5Ghz Toshiba Laptop (available - no screen)
        - Indash Motorized 7" VGA TS
        - DeLorme GPS (sold)
        - Power Inverter (sold)
        - Pioneer HU (sold)

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        • #5
          Originally posted by jjcuff1
          I bought a 225kw ac -dc inverter from Target for $29.
          I wonder how much the 1210kw are going for??
          Caputer Mk. II
          '02 VX Holden Commodore Series II Executive
          MII12000, 512MB RAM, 60GB HDD (5400rpm), 16X DVD, TS200V
          Morex 60W DC-DC, Custom S/SDC
          OS/Software: Developing...

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          • #6
            now THAT would burn out your alternator quick :P
            http://jupiter.walagata.com/w/djpm05/sig.jpg

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            • #7
              Now, with 225kw, you can power a whole house
              2004 Matrix XR A7N8X-VM/400 AMD XP-M 2500+, DS-ATX
              89 Supra Turbo P3 [email protected]/Abit BE6 II, Alpine M-BUS Car2PC.
              Y2K Accord Dell GX150
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              • #8
                How many jigawatts does it put out then? 1.21 perhaps?
                1.6GHz HP e-PC, 768MB RAM, 120GB WD HDD, Slim DVD-ROM, Onboard sound & video, 7" Lilliput, USB GPS Mouse, Audiovox FM Modulator, Vector 400 Watt Power Inverter, Windows XP Pro SP2, iGuidance 2, 15" Samsung LCD for the rear *Carputer not installed*

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                • #9
                  damn you! i was gonna make a flux-capacitor reference!!
                  "Is Wayne Brady gonna have to choke a b@$#*??!!"

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                  • #10
                    Sorry couldn't help myself. "The only thing that could produce that much power is a bolt of lightning!"
                    1.6GHz HP e-PC, 768MB RAM, 120GB WD HDD, Slim DVD-ROM, Onboard sound & video, 7" Lilliput, USB GPS Mouse, Audiovox FM Modulator, Vector 400 Watt Power Inverter, Windows XP Pro SP2, iGuidance 2, 15" Samsung LCD for the rear *Carputer not installed*

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                    • #11
                      Originally posted by dodgetimes2
                      Sorry couldn't help myself. "The only thing that could produce that much power is a bolt of lightning!"
                      Or a high protein diet fart.
                      Georgia Area Meet Photos

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                      • #12
                        hehehe ... funny how 1 letter wrong could cause all of this

                        do tell what part of the irock you grounded to the laptop frame. I will be doing this kind of setup soon!

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                        • #13
                          Forget all this fools. anyways you grounded the inverter to the laptop??????? WTF.... if you are getting the power from cig lighter then why would you ground the inverter to the laptop? i dont think this is right man.

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                          • #14
                            how many jigawatts did Doc need?

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