RC Time Constant Calculator

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RC

RC Time Constant Calculator

Charge / discharge time for a resistor-capacitor circuit

⚙️ Circuit Values
Time Constant τ = R × C
10 ms
Considered "fully" charged/discharged after ~5τ
📈 Voltage Over Time
TimeElapsedVc
🎯 Time to Reach a Specific Charge Level
t = 23.03 ms
Formula used: t = −τ × ln(1 − %/100) — the time needed for the capacitor to reach that percentage of the supply voltage while charging (same time applies symmetrically to discharging down to that remaining percentage).
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