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APPENDIX ARunning PSpice on PCs

PSpice programs are available in CDs. The first step is to have the directory

listing of the files on the program CDs. The next step is to print and read the

README.DOC file. It contains a brief description of the type of display andhard copy that are allowed by PSpice and Probe. It also contains the system

requirements and instructions for running PSpice programs.

PSpice will run on any IBM-PC, Macintosh II, or compatible computer. The

student version of PSpice does not require the coprocessor for running Probe.

The display could be on monochrome or color graphics monitors. There is no

requirement of special features for printers. The types of printers and display can

be set by editing the PROBE.DEV file or the setup menu. The simulation of a

circuit requires:

Installing PSpice software in PCs

Creating input circuit files

Run command

DOS (disk operating system) commands

PSpice Default Symbol Libraries

A.1 INSTALLING PSPICE SOFTWARE IN PCS

The steps to be followed to install a PSpice program in PCs with a hard drive are:

1. Place the Schematics CD ROM in the CD drive.

2. From Windows, enter the File Manager, and click with the left mouse

button (CLICKL) on the CD drive.

3. CLICKL on setup.exe, File, Run, OK.

4. OK, to select Install Schematics and PSpice A/D.5. OK, to select default C:OrCAD Dem.

6.

7. Click with the left mouse button once on the Design Center icon; the

window of the Design Center will open.

2006 by Taylor & Francis Group, LLC

Yes, to create Design Center icons as shown inFigure A.1.

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524 SPICE for Power Electronics and Electric Power, Second Edition

A.2 CREATING INPUT CIRCUIT FILES

The PSpice program has a built-in editor with shell, as shown in Figure A.2. The

net list or the input circuit file can be created by choosing Create Netlist from

can also be created by text editors. The text editor that is always available is

EDLIN. It comes with DOS and is described in the DOS users guide. Notepad

or WordPad in Accessories within Programs in the Windows environment can

also be used.The Accessories folder within the Programs folder on the Start menu is shown

FIGURE A.1 Icons of PSpice Schematics and PSpice A/D. (a) Schematics, (b) PSpice A/D.

FIGURE A.2 OrCAD PSpice A/D platform.

(a) (b)


the Analysis menu of PSpice Schematics as shown inFigure A.3. The input file

inFigure A.4. There are other editors such as Program Editor (from WordPerfect

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Running PSpice on PCs 525

Corporation). Word processing programs such as WordStar 2000, WordPerfect,

and MSWord may also be used to create the input file. The word processor

normally creates a file that is not a text file. It contains embedded characters to

determine margins, paragraph boundaries, pages, etc. However, most word pro-

cessors have a command or mode to create a text file without those control

characters. For example, WordStar 2000 creates text files with the UNIFORM

format.

FIGURE A.3 Creating Netlists from PSpice Schematics.

FIGURE A.4 Selecting text editor from Window programs.

(a)


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A.3 RUNNING DOS COMMANDS

In the Windows environment, DOS commands are enabled from the Command

Prompt, which is selected from the Windows Start menu, and then the Accessories

The DOS commands that are frequently used are as follows:To format a brand new diskette on drive A:, type

FORMAT A:

To list the directory of a diskette on drive A:, type

DIR A:

To delete the file EX2-1.CIR on drive A:, type

Delete A: EX2-1.CIR (or Erase A: EX2-1.CIR)

(b) (c)


for DOS commands as shown in Figure A.6.

FIGURE A.4 (continued).

submenu as shown in Figure A.5. Selecting Command Prompt opens the menu

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To copy the file EX2-1.CIR on drive A: to the file EX2-2.CIR on drive B:, type

COPY A:EX2-1.CIRB:EX2-2.CIR

To copy all the files on a diskette in drive A: to a diskette on drive B:, type

COPY A: *.*B:

To type the contents of the EX2-1.OUT on drive A:,

TYPE A: EX2-1.OUT

To print the contents of the file EX2-1.CIR on drive A:, first activate the

printer by pressing Ctrl (Control) and Prtsc (Print Screen) keys together and then

type

TYPE A: EX2-1.CIR

The printer can be deactivated by pressing the Ctrl (control) and Prtsc (print

screen) keys again.

FIGURE A.5 Selecting Command Prompt in the Windows environment.

(a) (b)


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A.4 PSPICE DEFAULT SYMBOL LIBRARIES

The student version of PSpice allows a maximum of ten configured (addressable)

symbol libraries at a given time. It has nine default libraries (with an extension

FIGURE A.5 (continued).

FIGURE A.6 Command Prompt menu.

(c)


.slb) as shown in Figure A.7. Their functions are described below:

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1. abm.slb: Analog behavior models for voltage and current sources

whose outputs can be controlled by mathematical expressions or tabulardata and a Laplace transform block.

2. analog.slb: Analog components for passive components (R, L, C),

coupled inductors, and dependent voltage and current sources.

3. analog_p.slb: Passive components (R, L, C) with parameterized values.

4. breakout.slb: Passive and active components in a simplified generic or

default configuration. It is useful for circuits when detailed models,

especially for active devices, are not available.

5. eval.slb: Detailed models for a few specific devices such as Q2N2222

for BJT, J2N3819 for JFET, uA741 op-amp, and IRF150 power

MOSFET.

6. port.slb:Different ports and pins for specifying node connections with-

out having to have a directly drawn wire connection. It also includes

ground connection or symbol.

7. source.slb: Independent current and voltage source models. Different

models of a voltage (or a current) source are used depending on the

type of analysis such AC sweep, DC sweep, and transient analysis.

FIGURE A.7 PSpice default symbol libraries


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8. sourcstm.slb: Specialized models of voltage and current source for use

with Edit Stimulus command in Analysis menu.

9. special.slb: Specialized parts such as PARAM (short for Parameters)

for creating parameterized simulations.

The user can add or remove libraries as desired within the maximum limit

of ten. Thus, the user can add at least one library without removing any of the

PSpice default libraries. The sourcstm.slb and analog_p.slb libraries, which are

not often needed, can be removed to make room for other libraries.

b l i

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