double caps

Discussion in 'General Electronics Chat' started by DexterMccoy, Apr 10, 2014.

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  1. DexterMccoy

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    Feb 19, 2014
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    why did they use two back to back capacitors?

    What is the difference between using 2 back to back electrolytic or polarized caps VS using a non electrolytic cap?
     
  2. MaxHeadRoom

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    Jul 18, 2013
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    Allows using the large value of a electrolytic for AC circuitry, for economic reasons.
    Essentially the same method as a large value start cap in a split phase motor, except it is all in one package.
    Max.
     
  3. DexterMccoy

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    Feb 19, 2014
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    here is another schematic
     
  4. MaxHeadRoom

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    Converting an electrolytic to a bi-polar cap equivalent.
    Max.
     
  5. DexterMccoy

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    But why would you want to use a bipolar cap to do AC coupling or Filtering?

    What is the advantage or what does it do differently?
     
  6. atferrari

    AAC Fanatic!

    Jan 6, 2004
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    Why do you insist in showing your circuits in that way, making them difficult to read?

    Handling images nowadays is trivial!

    If you expect others to answer your questions, help them first.
     
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  7. MaxHeadRoom

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    Both physical size and economics, otherwise not that much different for relatively low frequency.
    Max.
     
  8. Little Ghostman

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    I thought you were warned about posting those schematics! hiding the words that say what it is dosnt stop them being recognized!
     
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  9. joeyd999

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    Jun 6, 2011
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    What's wrong with the schematics? I can read them just fine. Especially when the question is about 2 caps that look the same no matter how you turn them...
     
  10. DexterMccoy

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    So the only reason they put the caps back to back was to get a larger value cap?
     
  11. Little Ghostman

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    No read what max said, he didnt say larger cap value did he? NO.
    He said something about converting something to something else (I will leave you to work out what the something was).
     
  12. profbuxton

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    Feb 21, 2014
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    Check on your "basic" electric theory, Dexter. What results when capacitors are connected in series or parallel?
     
  13. GopherT

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    It is not bigger, it is actually half the value of a single cap when you stack two of the same size in series.
     
  14. DexterMccoy

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    Feb 19, 2014
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    Yes but why would you want to do this?

    By looking at the schematics, why did they want to stack two caps in series like this? for what reason?
     
  15. Little Ghostman

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    Jan 1, 2014
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    Which bit of a plane is this from?
     
  16. t06afre

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    In the schematics they have used two polarized electrolytic capacitors. To create a non polarized electrolytic capacitor. This could to simplify servicing. As polarized electrolytic capacitors are much more common than non polarized capacitors in that size
     
  17. DexterMccoy

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    Why did they want to use a polarized electrolytic cap in those circuits? was it for the capacitors value and size?
     
  18. Little Ghostman

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    You NO READ very good! He say man no want polarized caps, he say man use 2 polarized caps, to make a NON polarized cap. you no read.

    That take the mick! you get an answer and clearly not bothered to try and read it properly just come straight out with a STUPID question!
     
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  19. t06afre

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    Ok after counting to 100 very slowly inside me. I will try to give you an answer. Let us for the sake of appearances say that you are not a troll, but someone that want to learn electronics. Remember back then you was a baby/small child. You had to learn to crawl before you could walk and walk properly before you run. And in between that you for sure got some scrapes as part of learning process/curve. And so is it with electronics. Before you can start with the more advanced material. You must have some basic knowledge of the fundamentals in electronic. To me you seem to not have the most fundamental knowledge in place. And hence it is very hard to know what to say to you. Perhaps you should tell us your education and experience level before asking more questions in this forum. It is nothing wrong to be an eager beaver. But perhaps in your case eager to learn is quite out of synch with your learning curve. And I think that may block your chance for a deeper understanding of electronics
     
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  20. shortbus

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    Sep 30, 2009
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    But his daddy, that owns the company, wants him to be an EE. Can you imagine working side by side with this guy? His fellow workers probably gave up long ago, so he goes to the web!!!
     
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