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Power Switch between two AC sources

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  • Power Switch between two AC sources

    I have a 300 watt rms inverter with two outlets that i bought from radio shack the other day. but being as my battery doesnt hold much of a charge, i want to be able to power it via the wall outlet when i am at home syncing for new songs and stuff. is there any way that i can switch between the inverter power and the wall power without polling the cord out every time? and not as important, but if it is possible to do it without interrupting the power going to the computer, so it doesnt shut off
    Still attempting an install right now
    Shuttle mobo and case with 2.6 Ghz
    512 mb Ram
    dvd rom
    wireless g
    lilliput 7" ts
    wireless keyboard

  • #2
    Couldn't you just hook up a charger to your battery?
    EPoX mATX SocketA w/onboard Geforce4MX / 512MB PC2700 / AthlonXP 1600
    Lilliput / DVDrom / Opus 150W / WD 3.5" 160GB / SB Audigy NX
    XP home / Road Runner / iGuidance 4.0

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    • #3
      I think this might be a job for a DPDT relay. Although you would need a source of power to trigger it. The Active and Neutral will be switched by the relay, but the earths can be wired together. I think, not too sure about this. Can someone verify this is correct/change it?
      Fox Mulder
      2004 Toyota MR2
      Modified Intel Xeon E5450 3Ghz Quad Core 2GB RAM 160GB SSD M4ATX Xenarc 700TSV TS Toslink Audio BU353 DiNovo Mini Car2PC ODBII Bluetooth HF 16x2 Character LCD

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      • #4
        Battery chargers aren't rated for that kind of draw. They're usually 3-10A.
        There are boxes that you can get that are meant for this application, though. Look at RV sites.

        I don't believe there is a way to safely switch the AC power between sources. You can also get inverters that have AC input for this kind of application. Again, you want to look around sites that sell RV equipment.
        95 Chevy G20 Vroom Boom Room
        ...with a whole bunch of nifty ****... go check it out: VanDomain Page

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        • #5
          I will check rv supply places for something like that. A friend and I, we work at radio shack together, drew up a schematic using a dpdt switch (one with no neutral) and a box with the connection from the inverter coming in and the power from the wall coming in and then hooking them to the switch and then the switch (load) to an outlet. but i would rather not have to build this. it would be a big pain in the a** to me is all. let me know if you think of anything else
          Still attempting an install right now
          Shuttle mobo and case with 2.6 Ghz
          512 mb Ram
          dvd rom
          wireless g
          lilliput 7" ts
          wireless keyboard

          Comment


          • #6
            I actually built a unit that did just that when I worked at the shack , it was actually quite simple all I did was take a small transformer and attached to the plug that I would plug into the wall and used that to activate the relay into House Power mode. So when you unplugged it from the house the relay would release and switch the computer back to being able to power it from the inverter.
            肚子笑痛了
            S60 Install

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