RCR in series with switch

Discussion in 'Homework Help' started by sampan511, Apr 9, 2015.

  1. sampan511

    Thread Starter New Member

    Feb 17, 2013
    1
    0
    Hi,

    Can anyone explain the following circuit, when switch is closed at t0+, why the voltage at V(y) drops to 3.33V?

    I can only explain the values from the voltage divider equation.
    V(x) = 10V * (R4)/(R3+R4)
    = 10V * 1 / 3
    = 3.33V
    V(z) = -10V * (R3)/(R3+R4)
    = -6.66V

    But why?
    upload_2015-4-9_12-36-50.png
    upload_2015-4-9_12-39-7.png
     
  2. WBahn

    Moderator

    Mar 31, 2012
    17,737
    4,789
    What if you redraw the circuit slightly:

    Captran.png
     
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