RC integrator step - positive

Computes the first-order exponential delay of an RC network to reach a defined switching threshold following a step change in input voltage. Output t_d is the time at which the capacitor voltage equals V_target.

\(t_d = R C \ln\!\left( \frac{V_{start} - V_{final}}{V_{target} - V_{final}} \right)\)

Instructions: Select the variable you want to solve for, and fill in the others.

Solve Symbol Input Value Unit Description
\(R\)
\(\Omega\)
\(C\)
\(F\)
\(V_{start}\)
\(V\)
\(V_{final}\)
\(V\)
\(V_{target}\)
\(V\)
\(t_{d}\)
\(s\)

References