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cant find 12v dc-dc plans :(

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  • cant find 12v dc-dc plans :(

    im after 12v dc-dc plans
    so when the engine cranks i still get 12v

    i know there is a few plans on here but i couldnt find anything when i searched..
    anyone??

    thanks
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  • #2
    Which planet you searching on ...?

    Mastero

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    • #3
      u can search on other planets? i'll be
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      • #4
        You might want to check out Mastero's sig
        2007 Honda Fit Sport 1.5L SOHC-VTEC

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        • #5
          there full psu's.
          i just want 12v out, unless i missed it on his site?

          btw : neat seat up mastero
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          • #6
            Originally posted by djmickyg
            im after 12v dc-dc plans
            so when the engine cranks i still get 12v
            Arenīt you refering to a tank circuit ?? as far as i know, the only way to get a stable 12v in a car when cranking it's with a tank circuit.

            Brave
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            • #7
              My friend get creative .. use only the 12 v section ...

              MAstero

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              • #8
                Originally posted by djmickyg
                there full psu's.
                i just want 12v out, unless i missed it on his site?

                btw : neat seat up mastero
                Why would you need anything then If your input is 12v and you want an output of 12v, I would connect whatever you have directly to the input voltage
                get it

                On a more serious note try Radio Shack or some electronic store if you just need to keep the voltage stabilised.
                2002 Chevrolet Avalanche
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                • #9
                  http://www.carnetix.com/GoodHumor/good_humor.htm
                  :/
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                  • #10
                    If you want a low 3A max 12.6v one based on Mastero's design, there's a lilliput regulator by shchua. The important thing I've learned from this design is that the voltage must drop some between input and output, so at 13.x in you can get 12.0 out, but at some specific voltage it will break down and drop considerably, so you need two sections. One that steps up to volts to say 20+, then the other regulates it down to 12. That's how you keep 12 in or even lower during crank at 12 out. Just a simple regulator can't do that.

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                    • #11
                      Originally posted by no1knows


                      I'd laugh more but it's somewhat true

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                      • #12
                        Originally posted by Dluvr22
                        Why would you need anything then If your input is 12v and you want an output of 12v, I would connect whatever you have directly to the input voltage
                        get it

                        On a more serious note try Radio Shack or some electronic store if you just need to keep the voltage stabilised.

                        i need 12v even when the engine is cranking.. so i need something that will make 14-8 into 12v..
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                        • #13
                          http://www.mp3car.com/vbulletin/show...ghlight=pt5071
                          Old Systems retired due to new car
                          New system at design/prototype stage on BeagleBoard.

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                          • #14
                            thankyou
                            thats the one i was after
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