R/C for given charging voltage
Calculate R/C for the charging voltage at a given time
On this page you can calculate the values of a capacitor or resistor that are required to achieve a certain charging voltage on a capacitor at a given point in time.
Use the radio button to select whether the resistance or the capacitor should be calculated and enter the values. Then click on the 'Calculate' button.
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Formulas vor calculation of R and C
\(\displaystyle C = \frac{t·(-1)}{R ·ln\left(1-\frac{U_C}{U}\right)}\)
\(\displaystyle R= \frac{t·(-1)}{C ·ln\left(1-\frac{U_C}{U}\right)}\)
\(\displaystyle R\ \) Resistor
\(\displaystyle C\ \) Capacitor
\(\displaystyle τ\ \ \) Time constant
\(\displaystyle t\ \ \) Loading time
\(\displaystyle U\) Source voltage
\(\displaystyle U_C\) Capacitor loading voltage
Capacitor functions
Series connection with capacitorsSeries connection with 2 capacitors
Reactance Xc of a capacitor
Time constant of an R/C circuit
Capacitor charging voltage
Capacitor discharge voltage
R/C for the charging voltage
Series circuit R/C
Parallel circuit R/C
Low pass-filter R/C
High pass-filter R/C
Integrator R/C
Differentiator R/C
Cutoff-frequency R,C
R and C for a given impedance
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