RC Circuit Calculator
Calculate essential parameters of resistor-capacitor (RC) circuits including time constant, cutoff frequency, and voltage response.
Understanding RC Circuits
An RC circuit consists of a resistor (R) and capacitor (C) connected in series. These circuits are fundamental in:
- Filtering signals in audio equipment
- Timing circuits in digital systems
- Smoothing power supply output
- Coupling and decoupling in amplifiers
Key Concepts
The time constant (τ) = R × C determines how quickly the circuit responds to changes:
- After 1Ï„: Capacitor charges to 63.2% of final voltage
- After 5Ï„: Circuit reaches approximately 99.3% of final state
- Cutoff frequency (fc) = 1/(2Ï€RC) is crucial for filtering applications