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Thread: Interter-UPS-PC..anything missing?

  1. #1
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    Exclamation Interter-UPS-PC..anything missing?

    I have a 300w ups with a max serge of 800w and a 500VA UPS - now how do i go about connecting it...

    CarBattery - -TANK CIRCUIT - - Aux Battery (UPS)

    now i attach a relay (please give me the schamatics and specs of the relay) so that when the car is off my aux battery is providing the back up...i would connect the (-) and (+) of the ups battery direct to the altinator through the tank circuit...so that it gets charged and kicks in when the car is cranking or i have the carputer turned on when the car is off....

    kindly help me - thanks guys!!

  2. #2
    MySQL Error MatrixPC's Avatar
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    If I read you right, you trying to connect from the car's battery -> Inverter -> UPS -> AC-PSU -> Mobo. If that the case, before you going further, try to plug in the inverter and the UPS to see if the 2 working nicely in the car.
    UPS in known to NOT WORKING with sqarewave inverter.
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  3. #3
    Self proclaimed spoon feeder TruckinMP3's Avatar
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    Quote Originally Posted by ankitgoenka View Post
    I have a 300w ups with a max serge of 800w and a 500VA UPS - now how do i go about connecting it...

    CarBattery - -TANK CIRCUIT - - Aux Battery (UPS)

    now i attach a relay (please give me the schamatics and specs of the relay) so that when the car is off my aux battery is providing the back up...i would connect the (-) and (+) of the ups battery direct to the altinator through the tank circuit...so that it gets charged and kicks in when the car is cranking or i have the carputer turned on when the car is off....

    kindly help me - thanks guys!!
    You have a lot of reading to do.... Good luck....
    TruckinMP3
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    Yes, you should search... and Yes, It has been covered before!

    Read the FAQ!

  4. #4
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    i know i am a complete newbie...can ne one please guide me - cuttin out queries...as to how to go abt the project...i have a inverter and usp and everythig else - please make things simple!

  5. #5
    Self proclaimed spoon feeder TruckinMP3's Avatar
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    Quote Originally Posted by ankitgoenka View Post
    i know i am a complete newbie...can ne one please guide me - cuttin out queries...as to how to go abt the project...i have a inverter and usp and everythig else - please make things simple!

    The trouble is.... the path you picked is not simple. The parts you have probably will not work together. Re-read the post by MatrixPC.

    Then start reading the Power Supply section for a couple ideas on what to use for correct results.

    As it stands we could tell you and you would just argue that you already have the hardware for what you want.... and it will circle around making you upset and lead to flames.

    Please go read and get the right background.
    TruckinMP3
    D201GLY2, DC-DC power, 3.5 inch SATA

    Yes, you should search... and Yes, It has been covered before!

    Read the FAQ!

  6. #6
    MySQL Error MatrixPC's Avatar
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    To make it short. The UPS and inverter you have in your hand will NOT working together. Basically, you can only use the inverter.
    Read up the FAQ section regarding to power supply. To get more idea.
    You can use inverter, Tank circuit, 2ndary battery together but you can't use inverter (square wave) and UPS. Unless you pay for big $$$$ for a sinewave inverter.
    2004 Matrix XR A7N8X-VM/400 AMD XP-M 2500+, DS-ATX
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  7. #7
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    to all of them.

    Many times people come onto this forum trying to apply their computer knowledge to the car, without realizing that there are two different kinds of electricity (AC and DC). Generally, you cannot take ideas for AC and apply them to DC.

    I'll suggest what the others have suggested. You really need to read up on this stuff to learn that things are different between the car and the desk.

    There are specific products that exist to make a PC work in a car. People have developed them for a reason and they work.

    Good luck!
    Jan Bennett
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    Please post on the forums! Chances are, someone else has or will have the same questions as you!

  8. #8
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    thank u so much...now that i have a brief idea - i wud use jus the inverter - connect it to a tank battery...and if i am wrong i am still going 2 do some reading on the forum...thanks a lot guys...

  9. #9
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    Thumbs up

    I have been successful in testing my idea...
    battery (12v 7AH) inverter(300w max surge 800w) - usp (non smart ups - which i have modified - added a switch to turn off the annoying beep)

    when i power the ups thru the inverter its working on ac lines and as soon as i turn the inverter off - the ups kicks in....there is no power failure or pulse...

    thanks guys...UPS;s are not pure sine wave - but are quasi sinewave - which is good enough...

    thanks again!


  10. #10
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    Quote Originally Posted by ankitgoenka View Post
    I have been successful in testing my idea...
    battery (12v 7AH) inverter(300w max surge 800w) - usp (non smart ups - which i have modified - added a switch to turn off the annoying beep)

    when i power the ups thru the inverter its working on ac lines and as soon as i turn the inverter off - the ups kicks in....there is no power failure or pulse...

    thanks guys...UPS;s are not pure sine wave - but are quasi sinewave - which is good enough...

    thanks again!

    nice to hear that but people here say the ups battery wont get charged by the squarewave inverter. how are your ups battery going with it?

    if the only issue is that the battery wont get charged, I am thinking of a circuit to charge the ups battery when engine in running, it might be messy but it will work. lets put aside the ROI for now

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