Deciphering complex capacitor circuit

Discussion in 'Physics' started by maxn, Dec 14, 2005.

  1. maxn

    Thread Starter New Member

    Dec 14, 2005
    1
    0
    Would you please recomend a simple method for finding an equivalent capacitance of a complex circuit with capacitors only? I am having a hard time, knowing how to redraw the circuit diagram and establishing correct relationship between the capacitors(parallel vs series). Of course this causes me to get a wrong calculated value for equivalent capacitance. The example I have read so far, have few (5) or less capacitors, with capacitor relationship very obvious to a beginner like myself. My homework problems have more than 5 with lines going all kind of ways (clearly made this way to confuse us). How do I read the lines or diagram of complex circuit correctly. I thought I understood junctions splits of the circuit diagram. But I keep getting major errors.
    Please help. Thank you much. Sincerely.
     
  2. n9xv

    Senior Member

    Jan 18, 2005
    329
    1
    Try to draw a rough example that we could work from to show "different" connections.
     
  3. pavelari

    New Member

    Jan 11, 2006
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    0
    i can't understand your question very well but i think, you need from substitute diagrams like:

    /c1, 1 μ F, 24v/ and /c2, 2 μ F, 24v/, series is equal to one capacitor /c, 1 μ F, 48v/
    in parallel /c, 3 μ F, 24V/

    principe: in paralel voltage is the lowest in series the capacitet is the lowest
    in paralel sum the capacitet in series sum voltage
     
  4. alim

    Senior Member

    Dec 27, 2005
    113
    1
    What you have most likely is a series prallel circuit. identify the parallel circuit/s solve it/them and solve for a series cct. with resultant parallel value/s in place.
     
  5. pavelari

    New Member

    Jan 11, 2006
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    send to me a principal cct and what you want to know ...
     
  6. amyy22

    New Member

    Jan 31, 2006
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    anyone know the name given to a circuit that has a load or resistance total of 0.0 ohms?
     
  7. amyy22

    New Member

    Jan 31, 2006
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    ^^ please and thank you. :D
     
  8. chesart1

    Senior Member

    Jan 23, 2006
    269
    1
    Hi,

    Like others have said, the actual circuit presented in the problem would help.

    Here are a few ideas:

    If your circuit or any portion of it resembles a wheatstone bridge, you could use the bridge formulae found in your text book.

    Likewise, if a portion of the circuit resembles a T network or a PI network, you could use the corresponding formulae from your textbook.

    John
     
  9. DC2002

    New Member

    Jan 24, 2008
    1
    0
    Hmm , assuming that there are no simple series or parallel combinations that could be solved with the series,// formulas. like a bridge circuit made only of capacitors , you could give the circuit an operating frequency and then find the capacitive reactance (Xc=1/(2piFC) ) then use the delta to wye (pi to t) conversions ... solve for an equivalent reactance , then use the Xc=1/(2piFC) to find the C , I guess
    hope it helps
    DC
     
  10. jvjtech

    Member

    Jan 26, 2008
    23
    0
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