Maker Electronics Math · Chapter 7

τ, Settling & Debounce

Ohms times farads really does come out in seconds. This is how long to wait, and what waiting costs.

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Enter a resistance and a capacitance, then press Calculate.
From the book — Chapter 7. τ = R × C. After 1τ it is 63.2% of the way there; wait 5τ and you are within 0.7%. For a divider, use the two resistors in parallel.

Matches Chapter 7, including the cost of waiting awake instead of asleep. Everything stays in your browser — no sign-up, nothing stored.