Initially, the circuit shown in Fig. P8.2 has a 0-V input. At time 0 its input changes to 5 V. Estimate the time it takes its output voltage to saturate, using the concepts of average capacitance and...

Initially, the circuit shown in Fig. P8.2 has a 0-V input. At time 0 its input changes to 5 V. Estimate the time it takes its output voltage to saturate, using the concepts of average capacitance and first-order transient solutions for each node. The time constants of the individual nodes can be added to arrive at an overall time constant for the approximate first-order transient response of the circuit. Next, assume that the input changes from 5 V to 0 V at time 0. How long does it take the output voltage to change to 3.5 V?