PSPICE Handout

Run the Pspice: Start/All Programs/PSPICE Student/Schematics

Part 1: Drawing Components

This will open the schematic window. You will be able to draw your circuit in this

window and perform various simulations. We will show the step by step graphical

instructions to draw and simulate the simple diode circuitry shown in Fig1.1 of your Lab1

handout.

To find the component that you need in your circuit, you type the name of that

component in section called: part name (on the top left corner of the window Part

Browser Basic)

For example by typing D, you can find diode family. Figure below shows the picture.

Drag the D1N4002 and drop it in the window (You can rotate the component by using

CTRI+R).

You can find other components by typing short abbreviations below:

DC power supply: VDC

Resistor: R

Ground: GND

Now you can connect various components in the circuit by using Draw Wire Icon in

figure below.

Figure below shows the complete circuit drawn:

You can change the value of a component by click on it. For example to change resistor

R1 value click on 1k on figure above. A window opens that allows you to change

component value, figure below shows the procedure.

Part 2: Simulation

You have the option to do different types of analysis ( DC sweep, AC simulation and

transient simulation) on your circuit. Here we try to show you the procedure to set up the

DC sweep. We try to sweep the DC power supply value from 0 to 6 (component V1 in

the circuit that you drew before).

Go to: Analysis/setup

Click on DC sweep on figure above. This will open the below picture for you. It

allows you to sweep the variable that you want. Here we sweep DC power supply V1

from 0 to 6 with step 0.1

Save your schematic by going to: File/Save as

Now you are ready to simulate your circuit. Go to: Analysis/simulate, this will simulate

the circuit and the result opens in a new window. Figure below shows the result.

This figure shows the diode current versus the DC power supply (V1). We are interested

to graph the diode current versus diode voltage. To do that, we have to change the x-axis

to be the voltage across diode.

Go to : Plot and click on Axis Setting.

This will open the below window (axis setting window). Follow the procedure on the

picture to make the necessary changes to x-axis.

The new graph is shown in figure below. This is the Id(diode current) versus Vd(diode

voltage).