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Lead Lag network

  1. Mar 7, 2009 #1
    How is a series RC network acting as a lead network & a parallel RC combination acting as a lag network ?
  2. jcsd
  3. Mar 7, 2009 #2


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    a good start would be to write down the complex impedances of each
  4. Mar 7, 2009 #3
    It depends on how the RC network is connected to the load. For example, if R and C is added in series with the load, then the phase angle of the load current will increase. If C is in parallel with the load and R is in series with both, then the phase angle will decrease. However, if R is in parallel with C and the combined network is in series with the load, the phase angle of the load will increase.
  5. Mar 8, 2009 #4
    How is this phase angle increasing & decreasing , that i want to know .
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