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Homework Help: What is the equation switched capacitors

  1. Apr 4, 2012 #1
    what is the equation that describes the relation between the charging current i(vdd) and that switched capacitors ( c1,c2,c3,c4,c5) if we put into consideration that switches are closing in sequence switch 1,switch 2, . . .switch 5 with a delay time of td


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  3. Apr 4, 2012 #2
    There is a problem with your circuit.
    When the second capacitor is switched, there is an infinite current through the switch.
  4. Apr 4, 2012 #3
    can we think about it as a variable capacitor?
  5. Apr 4, 2012 #4


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    That's only for an instant.

    When the switch for C2 is closed, the voltages across C1 & C2 become equal to each other virtually instantaneously. Then the pair continue to be charged for that point.
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