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Thread: I feel like a real idiot because I cant get my inverter to work

  1. #1
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    Red face I feel like a real idiot because I cant get my inverter to work

    I feel like a real idiot because I cant get my inverter to work. Heres the deal, I attached the clips to my battery and then I attached the ring terminals to my inverter.(this was temporary of course) I turned it on for the first time and evrything was good the fan was spinning and just the green light was on. With an extension cord I plugged the power supply into the inverter. As soon as I did the red light on the inverter came on (Low battery/overload). When the red light is on nothing works. I thought maybe my battery was low so I tried it on my dads truck and the same thing happened. Do you think this is a bad inverter?

    Heres some info
    250watt PSU
    400Watt Vector Inverter bought it at Target today $44.00
    Thanks dudes

  2. #2
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    Angry

    Mine overloads sometimes when I turn on the car... I just flip if off then on and it works fine. Does your make a whiny/squeaky sound when it overloads?

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  3. #3
    Maximum Bitrate gizmomkr's Avatar
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    I had problems with inverters as well - I boutght a DC - DC supply ,and I highly recomend them ... but anyway

    2 things to check:
    1. when the inverter is initialy turned on, it pulls a burst of curent that can exceed 400 wats, I cant say exactly how much, but I can put my o-scope to it if you really want / need to know. the solution is - a smaller PSU, or a larger inverter. I bought my inverter at target for about 75.00, its a 750Watt unit, and it had no problem with my 250 watt PSU, it worked well.

    2. The other posibility is - batery voltage, some people ( and it varys by car, inverter, alternator etc..) have a verry low voltage on there car electrical system. the car with ignition off usualy shows 11.5 volts ( or close) but I have seen some as low as 10, and others as high as 14. when you start the car, the alternator starts to charge the batery and power the car ( and your inverter ) some cars take a couple of minutes untill the system can build up enough charge to run the inverter - try driving your car for about 15 minutes down the highway, and then ( with the car still running) start the inverter. if this does not work go back to step 1, get a larger inverter.
    Gizmo-
    Techonlogy on Wheels
    http://www.hjnetworks.com/car

  4. #4
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    Red face

    If you dont mind try plugging it into the ciggarette lighter, that should work fine. When you hook it up to the battery there are more precautions and risks.

    peace
    .:@m֧p:.winamp.win98.pentiumII.10gig

  5. #5
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    I have a 150W inverter and a 250W power supply -- mine works fine.

    An old 200-300 Mhz and a hard drive don't use anywhere near 250W, more like 60-80. I think that 750W inverter is a bit of overkill.

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  6. #6
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    You may want to try it this way.
    Have the inverter off.
    Plug the computer into the inverter.
    Turn on the PSU in the computer
    Turn on the inverter.

    I had some problems having the inverter on and then turning the psu on but when I had the psu on and then turned on the inverter all worked well.

  7. #7
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    Thanks everyone for the replies.
    Heres what I have tried

    1)Tried to plug it into the cigarette lighter and the same thing happens. Right when I plug in my PSU the red light goes on. No the inverter does not make a squeak noise although it does have that feature because when I was installing the computer it started to squeak. Then I started the car and drove it around to recharge.

    Heres another thing that happens that doesn't seem normal. Although maybe its suppose to I dont know you be the judge. I plug the inverter into the cig. lighter and turn it on I get just a green light. I turn the inverter off. I turn the inverter back on and the red light comes on. If I turn it off and then on again the red light is still on. I only get the green light the very first time!!

    I am thinking of getting a bigger inverter do you think this will solve the problem?
    I don't want to get another power supply because chances are it will not fit into the custom enclosure. And I cant find an ATX DC DC.

  8. #8
    Maximum Bitrate gizmomkr's Avatar
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    It sounds like you might just have a bad inverter. ( or a verry low car batery )

    check the for sale section - I made a post about 12V ATX DC-DC
    Gizmo-
    Techonlogy on Wheels
    http://www.hjnetworks.com/car

  9. #9
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    ***UPDATE***
    I got my hands on a new motherboard that has both an AT and ATX power connecter. My original plan was to buy an AT DC-DC but since I had a AT 230watt PSU I decided to try it in the car. I did and everything works good now my inverter runs like a champ!! I was just hoping to get some kind of explanation. Are some PSU not compatible with an inverter?

  10. #10
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    Maybe your atx psu was just less efficient thatn the AT one, requireing a greater load, that the inverter just couldn't supply.
    http://www.mp3vl.tk Plans and progress on my install - (Updated 28 June 02)
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