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  #1  
Old 08-13-2013, 04:23 PM
ADI89 ADI89 is offline
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Smile capacitor size vs frequency

How does the size of capacitor depend upon the frequency?
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Old 08-13-2013, 04:29 PM
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MaxHeadRoom MaxHeadRoom is offline
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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.
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Old 08-13-2013, 07:01 PM
wmodavis wmodavis is offline
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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.
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Old 08-13-2013, 07:14 PM
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Papabravo Papabravo is offline
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Quote:
Originally Posted by ADI89 View Post
How does the size of capacitor depend upon the frequency?
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.
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Old 08-13-2013, 07:17 PM
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Quote:
Originally Posted by ADI89 View Post
How does the size of capacitor depend upon the frequency?
This is such a vague question that there is no possible correct answer.
You have to elaborate on what you mean to say.
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Old 08-13-2013, 10:21 PM
snowdrifter snowdrifter is offline
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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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Related Site Pages
Section Title
Worksheet Series-parallel combination AC circuits
Worksheet Resonance
Worksheet Impedance
Worksheet Capacitive reactance
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Textbook AC capacitor circuits : Reactance And Impedance -- Capacitive


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