Calculate the time constant (τ) for an RC circuit. Determines how quickly a capacitor charges or discharges, critical for timing circuits and filters.
One Tau (τ) is the time it takes for a capacitor to charge to 63.2% of the supply voltage or discharge to 36.8%.
It is generally considered fully charged (99.3%) after 5 Time Constants (5τ).
Capacitor reaches 63% charge in 1τ.