Capacitor banks, use? Or not worth it?

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  • bwells
    Senior Member
    • Jan 2009
    • 842

    #31
    cornelp and m4a1usr, Thanks for reply, you guys answered all my questions.

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    • CornelP
      Senior Member
      • May 2009
      • 745

      #32
      Jeff, make sure you have the same voltage rating, temperature rating as the existing ones (the best are the ones marked low ESR). As for capacity, the more the better. Somebody with more experience in electronics told me the magic number would be 15-20000uF, but that's too bulky. The biggest one I've done had 5pcs of 2200uF.

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      • Jeff Wohlt
        Fast Electric Addict!
        • Jan 2008
        • 2716

        #33
        But most use a 25V rating. Is that enough Is that what they use for the 6S ESCs as well? Seems too close if running 6S

        I think I would go with the 35V...is that correct?
        www.rcraceboat.com

        [email protected]

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        • norbique
          Senior Member
          • May 2009
          • 356

          #34
          Jeff, you're safer with the 35V caps at 6S.
          Sometimes I wonder whether the world is being run by smart people who are putting us on or by imbeciles who really mean it.
          - Mark Twain

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          • AndyKunz
            Fast Electric Addict!
            • Sep 2008
            • 1437

            #35
            35V is marginally safe. When we design electronics, the rule of thumb (for the past 35+ years of my knowledge) has been to use about double. With that in mind, you would really want 50V caps, not 35V, to be sure.

            Andy
            Spektrum Development Team

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            • CornelP
              Senior Member
              • May 2009
              • 745

              #36
              I was kind of hoping Andy will answer... I had the same question for some time now...

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              • Jeff Wohlt
                Fast Electric Addict!
                • Jan 2008
                • 2716

                #37
                Good stuff, Andy! Where can I get those? Is one enough to help the ESCs or do we want more and what about the UF? More at lower is better than fewer at higher?

                I do not understand this stuff but want to add some to my ESCs

                Why does ETTI use the smaller boards with smaller caps?
                www.rcraceboat.com

                [email protected]

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                • RandyatBBY
                  Fast Electric Addict!
                  • Sep 2007
                  • 3915

                  #38
                  So Andy I am working on a big 12S2P setup in a 92 inch cat with twins. What would be the best size caps to add on the the 40.160's? Should I just try to match the Schultz's? Also I need to set up the anti snap connectors too do you know how to do that?
                  Randy
                  For ABS, Fiberglass, Carbon hulls and Stainless hardware
                  BBY Racing

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                  • norbique
                    Senior Member
                    • May 2009
                    • 356

                    #39
                    For the 12S setup you should find caps for 100V.
                    Since I have no experience with 12S setups, I can only guess. I'd use a 1-2 ohm resistor. Andy correct me if I'm wrong.
                    Last edited by norbique; 05-14-2010, 04:40 PM.
                    Sometimes I wonder whether the world is being run by smart people who are putting us on or by imbeciles who really mean it.
                    - Mark Twain

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