TABLE OF CONTENTS SPICE provides a powerful tool for visualizing the various responses of a circuit. Depending on the case, either the .TRAN or the .AC statement is used. In this section we direct our attention to the source-free, complete, and frequency responses.
Use PSpice to display the source-free voltage response at each node in the circuit of Example 14.11.
Solution
Refer to Figure 14.37. The input file is
SOURCE-FREE RESPONSER1 0 1 2KC 1 0 5N IC=10L 1 2 1M IC=0R2 2 0 0.5K.TRAN 0.5U 30U UIC.PROBE.END
After directing the Probe post-processor to display V(1) and V(2) we obtain the traces of Figure 14.38.
Use SPICE to display the source-free response of the circuit of Example 14.13.
When studying the complete response to an applied signal of the ac type, we wish to visualize such a response as a function of time rather than frequency. To this end, SPICE allows for any independent source to be a damped sinusoidal function of time. In PSpice a damped sinusoidal source is defined as
where X O is the dc value or offset, X A is the peak amplitude, ? is the damping coefficient, t is time, t D is a time delay, f is frequency, and ? is...
