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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\(\displaystyle R\)
Resistor
\(\displaystyle C\)
Capacitor
\(\displaystyle τ\)
Time constant
\(\displaystyle t\)
Loading time
\(\displaystyle U\)
Source voltage
\(\displaystyle U_C\)
Capacitor loading voltage
\(\displaystyle C = \frac{t·(-1)}{R ·ln\left(1-\frac{U_C}{U}\right)}\)
\(\displaystyle R= \frac{t·(-1)}{C ·ln\left(1-\frac{U_C}{U}\right)}\)
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