capacitor size vs frequency

Discussion in 'General Electronics Chat' started by ADI89, Aug 13, 2013.

  1. ADI89

    ADI89 Thread Starter New Member

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    How does the size of capacitor depend upon the frequency?
  2. MaxHeadRoom

    MaxHeadRoom Well-Known Member

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    By size do you mean value?
    Look into the effect of capacitive reactance.
    You might also want to study tuned circuits.
    Max.
  3. wmodavis

    wmodavis Active Member

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    The frequency of capacitor size depends on the size of the capacitor and the frequency of the size of the capacitor and may be resonant due to any near by inductors irrespective of its size.
  4. Papabravo

    Papabravo AAC Fanatic!

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    If you mean the physical size -- it doesn't.
    The working voltage has a major effect because it dictates the thickness and composition of the dielectric. It is also difficult to get a large capacitance in a small volume. So capacitance and working voltage go hand in hand so to speak.

    As you increase the frequency the reactance goes down for a given value of capacitance.
  5. MrChips

    MrChips Moderator Staff Member

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    This is such a vague question that there is no possible correct answer.
    You have to elaborate on what you mean to say.
  6. snowdrifter

    snowdrifter Member

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    Gotta be more specific. What will you be using this for? What sort of frequencies are we talking about?
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