### Transient response of RC Circuit

Transient response of RC circuits are studied. The voltage changes
across the capacitor after applying a step voltage through a resistor is
plotted. The RC time constant is calculated by fitting the discharge curve
with the equation. The capacitor charging is exponential only when it is
through a linear element like a resistor.

The voltage across a capacitor changes linearly when charges through a
constant current source. Connect to CCS instead of OD1 and click on CC
Charge to get the output shown below. After 3 volts the graph is not
linear due to the limitations of the current source.