24V to 12V, 100W DIY Converter

Discussion in 'General Electronics Chat' started by R!f@@, May 8, 2016.

  1. R!f@@

    Thread Starter AAC Fanatic!

    Apr 2, 2009
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    I am looking for a schematic that any one made.
    I need to convert 24V to 12V at around 10A, output.
    A DC to DC converter will suffice, cause space limitation is there. Isolation is not needed.

    Any one made any ?
     
  2. R!f@@

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    Apr 2, 2009
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    OK ! Me found one on a Zech site.
    I can translate all of the writings except one confusion.
    The caps say like 22nf, keram.
    I am guessing it is 22nf, ceram. As in ceramic.

    Am I right ?
     
  3. R!f@@

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    And like to clear one more issue.
    How to figure out the wire thickness of the inductors.
    It says 70uH/10A. I guess from this one needs a formula to figure out the wire gauge.
    Any Pointers ?
     
  4. Alec_t

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    Keramic is Czech for ceramic.
    Google "Inductor design". It's a black art.
     
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  5. kubeek

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    Sep 20, 2005
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    Yes, keram means ceramic cap.
    I think the author expects to buy an inductor that has the required inductance and can withstand the current. The rule of thumb for the wire is approximately 3A/mm2, so for 10A continuous you need roughly 3-4 mm2 wire, preferably multiple strands (both easier to wind and lower losses at high frequency).
    The saturation current of the inductor should be at least 12A.
     
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  6. Andrew Hodson

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    May 26, 2016
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    Guess you not got 50Ahr 12 volt battery around, & then just go from 1 to other.
     
  7. bertus

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  8. kubeek

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    I can translate or clarify that, should anyone need.
     
  9. mcgyvr

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    Oct 15, 2009
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    Can you translate? "Both bertus and kubeek fooled by newbie Andrew bring back a post that was over days ago"
    Not necro but over..
     
  10. R!f@@

    Thread Starter AAC Fanatic!

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    I already found the answer.
     
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