User Guide

Phase One: Developin
g
the Desi
g
n 2
-5
2
From the Draw menu, use Wire to connect the symbols as
shown in Figure 2-1.
3
From the Edit menu, use Attributes to set V1’s DC attribute
to
5v.
4
From the File menu, select Save As and enter
mydiode.sch in the File Name text box.
The PSpice Optimizer Advanta
g
e
To determine a value for R1 manually, you can set up a
parametric analysis of a DC sweep where:
• the value of R1 steps from 4 k to 5 k in increments of 0.1 k,
and
• the DC sweep analysis is a single-point voltage analysis at 5
V.
Such an analysis requires eleven PSpice simulations. Using
Probe, the resistor value giving rise to 1 mA current through D1
is 4.14 k.
The remainder of this chapter shows how to use the PSpice
Optimizer to determine the same solution automatically using
fewer simulations.