User Guide

Chan
g
in
g
a Goal to a Constraint 5
-13
Chan
g
in
g
a Goal to a
Constraint
Try examining what happens when you change one of the
specifications from a goal to a constraint.
To chan
g
e a
g
oal to a constraint
1
Edit a specification:
a
In the PSpice Optimizer window, double-click the hot-
spot (lower right-hand corner) in either the Vc or Rt
specification box.
b
Select the Constraint check box.
c
In the Type list, choose the type of constraint.
2
From the Edit menu, select Reset Values to set the current
values back to the original initial values.
3
From the Tune menu, select Update Performance.
4
If you want to run a complete optimization:
a
From the Tune menu, select Auto.
b
Click Start.
For this example, the PSpice Optimizer should produce
approximately the same result for each configuration of the
two specifications (one goal and one constraint).
Savin
g
Results
At this point you would ordinarily select Save from the File
menu to save the results. However, to avoid modifying the
tutorial files, either:
• From the File menu, select Save As to store the results under
another file name, or
• omit the save process entirely.
For an example, see See Goals
versus Constraints on page 4-2
for more information.