Understand that an RC circuit approaches its final voltage exponentially, that it reaches about 63% of the way there after one time constant, and that a bigger resistance or capacitance both slow the transient down.
Time constant: τ = R·CCharging: Vc(t) = V0·(1 − e^(−t/τ))Discharging: Vc(t) = V0·e^(−t/τ)In Charging mode, scrub time to exactly τ = RC. Confirm the capacitor voltage has reached about 63% of the source voltage.
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