User`s guide

2
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20 Simulation Examples
AC Sweep Anal
y
sis
The AC sweep analysis in PSpice A/D is a linear (or small
signal) frequency domain analysis that can be used to observe
the frequency response of any circuit at its bias point.
Settin
g
Up and Runnin
g
an AC
Sweep Anal
y
sis
In this example, you will set up the clipper circuit for AC
analysis by adding an AC voltage source for a stimulus signal
(Figure 2-17) and by setting up AC sweep parameters.
Fi
g
ure 2-17
Clipper Circuit with AC Stimulus
To chan
g
e Vin to include the AC stimulus si
g
nal
1
In Schematics, open
clippert.sch.
2
Click the DC voltage source, Vin, to select it.
3
From the Edit menu, select Replace.
Time-domain and AC stimuli are
independent of one another. For
example, the SINE stimulus is
i
g
nored (0V) durin
g
AC analysis.