Resistence seen by a capacitator,how to solve them?

Discussion in 'General Electronics Chat' started by huking1000, Jan 1, 2016.

  1. huking1000

    Thread Starter New Member

    Jan 1, 2016
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    Are e any texts e who explain how to find the resistence seen by a capacitator,and when there are other capacitators on the circuit,to know if they are indipendent or not
     
  2. Dodgydave

    AAC Fanatic!

    Jun 22, 2012
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  3. anhnha

    Well-Known Member

    Apr 19, 2012
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    What do you mean with "resistance seen by a capacitor"?
     
  4. huking1000

    Thread Starter New Member

    Jan 1, 2016
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    fors example find the resistance seen by Cd,with the generator V1 turned off ,and let's put a generator Va in Cd and let's measuce the current at its terminals and see if the other capacitor C influences or not the resistance seen by Cd,I mean if we consider C open does it influence the resistance,what if we consider it closed
     
  5. Narcis992

    New Member

    Jan 1, 2016
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    resistor R1 parallel with a condensator C1 how can i find that the resistence or the condensator its a bad component?
    How can i measure it?
    for example :R1=1kohm C1=1uF after i've measured R1 with multimeter it has 700 ohm (C1 its bad or R1 its bad?Without to remove the resistence?)
     
  6. anhnha

    Well-Known Member

    Apr 19, 2012
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    As I see when V1 is turned off, two voltage-controlled current sources are zero. So impedance seen by CD will be Z = RD1 + R|| 1/(sC) + RD2 and the resistance is the real part of Z. It depends on C.
     
  7. Jony130

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    Feb 17, 2009
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  8. Narcis992

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    Jan 1, 2016
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    So in a PCB after multimeter measurements R1 or C1 which one of them are destroyed or something like that?
     
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