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A Capacitor

  • discharges across a resistor according to
  • charges across a resistor according to
  • reaches 50% of it's final value after 0.7RC
  • reaches 1%/99% (steady state) of it's final value after 5RC

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Examples

Passive RC Low-Pass Filter
Passive RC High-Pass Filter
Passive RC Integrator
Passive RC Differentiator