RC Circuit Transient Simulation

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collinsemasi

Using the RC circuit, Run a .tran (Transient) simulation for 5 milliseconds with a step size of 200 microsecond. Plot the voltage across the capacitor over time to show the charging curve.

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Here is the transient charging curve of the capacitor over 5 ms (step size 200 µs):

RC Charging Curve

Key points:
  • τ = R·C = 1 kΩ × 1 µF = 1 ms
  • V(OUT) at 1 ms ≈ 3.16 V (63% of 5 V)
  • V(OUT) at 5 ms ≈ 4.97 V (99.3% of 5 V)
Change resistor value
Check discharge behavior
Shorter simulation step
Vary capacitor value
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