User`s guide

10
-
6 AC Analyses
AC Sweep Setup in
“example.sch”
If you look at the example circuit, example.sch, provided with
your MicroSim programs, you’ll find that its AC analysis is set
up as shown in Figure 10-1.
Fi
g
ure 10-1
AC Analysis Setup for example.sch
Frequency is swept from 100 kHz to 10 GHz by decades, with
10 points per decade. The V1 independent voltage source is the
only input to an amplifier, so it is the only AC stimulus to this
circuit. Magnitude equals 1 V and relative phase is left at zero
degrees (the default). All other voltage sources have zero AC
value.
Note
The source, V1, is a
VSIN source that is normally
used for settin
g
up sine wave
si
g
nals for a transient
analysis. It also has an AC
attribute so that you can also
use it for an AC analysis.
To find out more about VSIN and
other source symbols that you
can use for AC analysis, see
Using time-based stimulus
symbols with AC and DC
attributes on page 3-25.