Capacitor Circuits Calculator
Calculate RC circuit charging and discharging behavior with time constants and energy storage
Quick examples:
Quick examples:
RC Charging Circuit
1000.00 ms
Time Constant (τ)
1.2000 mC
Max Charge
7.2000 mJ
Max Energy
Time Constant Milestones
| τ | Time | Charged |
|---|---|---|
| 1τ | 1000.00 ms | 63.21% |
| 2τ | 2000.00 ms | 86.47% |
| 3τ | 3000.00 ms | 95.02% |
| 4τ | 4000.00 ms | 98.17% |
| 5τ | 5000.00 ms | 99.33% |
Formulas
τ = RC
Charging: V(t) = V₀(1 - e^(-t/τ))
Discharging: V(t) = V₀ × e^(-t/τ)
After 5τ, charging reaches 99.3% and discharging drops to 0.7%.
About RC Circuits Calculator
Calculate the charging and discharging behavior of resistor-capacitor (RC) circuits. This tool computes time constants, voltage, current, charge, and energy at any point in time using exponential equations.
Key Concepts
- Time constant (τ = RC) determines how quickly the capacitor charges or discharges
- After 1τ, charging reaches 63.2% and discharging drops to 36.8%
- After 5τ, the circuit is considered fully charged or discharged (>99%)
- Energy stored in a capacitor: E = ½CV²
Common Applications
- Electronics design and timing circuits
- Filter circuits in audio and signal processing
- Power supply smoothing and decoupling
- Physics and electrical engineering education
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