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  • Weird inverter problem

    Bought myself an 150W inverter last week.
    But when I connect a ATX-power supply to it, it begins to tick like an relay is beeing operated and no ouput voltage. It works fine with lamps, glue-gun ....
    This happens regardless if the atx supply is 70w - 350w.
    But on one of my supply's, a 150W one. It ticks for 5-10sec and then turn on.

    Anybody knows anything about my problem?

    BTW, this happens regardless if the ATX supply is connected when I switch on the inverter or if I connect it afterwards.

  • #2
    Done some more testing now.
    Opened my inverter and it is the beep'er that's making the ticking sound. The beep'er only gets power in 1 nano sec or something so it just tick's instead of beep.

    I also tried my brand new 350w atx supply and this works. I hear 1 tick before the inverter gives power but that way better than the old atx supplys I've tried so far. But now my inverter(yes, my inverter and not my atx supply ) makes this buzzing sound.
    Is there a way around this?

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    • #3
      Buy another inverter ?
      Just curius, that inverter square wave, modified square or pure sine wave?
      - Will work for Bandwith -

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      • #4
        Originally posted by didiet78
        Buy another inverter ?
        Just curius, that inverter square wave, modified square or pure sine wave?
        No, the next thing now is an DC-DC supply!

        It stands "Modified sine wave" on the back of it.

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        • #5
          That 150w inverter isn't really good for much, maybe a small laptop.

          Try getting something bigger if you stay the inverter route.

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          • #6
            the noise is due to the inverter being overloaded. You need to use an inverter rated about 25-30% higher than your PSUs rating. Even if you are drawing that much it just does not work right in some situations.

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            • #7
              Originally posted by zanor
              No, the next thing now is an DC-DC supply!

              It stands "Modified sine wave" on the back of it.
              You need more wattage inverter or u need to limit inrush current your ATX power supply.
              - Will work for Bandwith -

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              • #8
                Cut the ground prong off the power cable. It might not help, but you don't really have anything to lose in trying.

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                • #9
                  Thanks for all your replays!

                  But never mind, just ordered an M2-ATX

                  And btw "numbers", there is no connection to the ground in the outlet of my inverter.. Thanks anyway

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