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Thread: Newbie .... Carputer .... problems ?

  1. #1
    Newbie
    Join Date
    Apr 2005
    Posts
    8

    Question Inverter 600w ....... 220v problem

    Hello to everyone ! im totaly new in the forum , sorry about my english , im from greece

    yesterday buyed a DC/AC inverter 12v --> 220v 600w

    i've connected the 12v power from the battery directly , and i measured the ac currend and always was on 190-205volts , never 220.....

    my car when is off the battery has 12,5v and where on 13,8v

    i've connected my pc , after inverter and worked correctly ...... is possible that the measure (190-205v) was wrong ?

    using the lights , starting engine and some extra power for tft and other stuff , the battery dc volts was going from 10v to 13.8v

    my inverter cuts the power where the dc volts drops down 10.5v .... so my pc is rebooting ......many times my inverter beep and tells me that the dc power is not enough ....

    what i have to do for better working ?
    nevere rebooting .....or hanging my pc system ?

    and regoulating the power......

    thanks

  2. #2
    Variable Bitrate
    Join Date
    Sep 2004
    Posts
    291
    You can get a bigger battery, larger power wire (this alone may not do it), second battery, or use a tank circuit to keep the PC from rebooting. We have a tank circuit if you cannot build one.

    Don't worry about the inverter's voltage if it works.

    KyferEz
    TheCarPCStore.com - Power Controllers (SDC), Inverters, Tank Circuit, GPS, OBDII, CarPCs, and more!
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  3. #3
    Newbie
    Join Date
    Apr 2005
    Posts
    8
    thanks for the reply

    i'll search the forum for the tank circuit

    i'm studing electronic engeniering so it would be easy to buildit

    thanks again

  4. #4
    Newbie
    Join Date
    Apr 2005
    Posts
    8
    What kind of backup battery i need to use , for not having drops in my 12v inverter input ?

    because my inverter stops working when power dropes down 10,7volts

    what kind of diode is needed ?

    any fuses?
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  5. #5
    Constant Bitrate
    Join Date
    Oct 2004
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    137
    That diagram won't work very well as the car starter will suck the backup battery's current as well as the car's battery.

    ColdPhreze
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  6. #6
    Newbie
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    Apr 2005
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    i've put the diode in the wrong place

    this is the correct diagram
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  7. #7
    Newbie
    Join Date
    Apr 2005
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    8
    I've build the circuit above
    using an mbr3045 diode , but the problem didnt solved..


    where my cars battery falls down to 10.4 , the backup battery dosent
    give the apropriate 12v to the inverter ....

    but the circuit works correctly , if i disconnect the car battery , an using only the backup , and visa versa

    what's the problem?

  8. #8
    FLAC
    Join Date
    Nov 2003
    Location
    Marietta, GA
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    1,134
    dtomgr,

    You may want to contact Omeganet/Xenarc (Athens) for some help.

    Good luck!
    MikeH

  9. #9
    Stank Cheese n8scstm's Avatar
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    Eastvale, Ca (Near Corona)
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    805
    Use a sure power inverter to isolate the batteries. It will work like this.
    http://www.surepower.com/isolator.html
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