ORCAD PSPICE

In order to start using the software, you will have to create a new Project. Go to FileNewProject. A window will appear and you have to provide a new project name and browse for a location

Another window will appear; choose ‘Create a Blank Project’.

To start designing your circuit, you need to ‘Add Parts’ using the symbol. However, you will need to add one or more libraries in order to access particular parts. To add the libraries, click the ‘Add Library’ icon.

Then, a second dialog opens with a list of libraries. Select all the libraries using the ‘Shift’ key and then click the ‘Open’ button.

ADD PARTS For resistors, capacitors – category is ANALOG For voltage/current supplies – category is SOURCE For specified device with code such as D1N4148 (Silicon Diode) – EVAL

REMEMBER! Every schematic MUST have GROUND CAPSYM  0

Square Wave is the VPLUSE function in the limit of TR = TF = 0 and PW = 0.5 * PER (PER is the period of the wave). This limit case, however, causes numerical difficulties in calculations. A good choice for TR is to set it to be 1% of the PER (a period): TR = TF = 0.01 * PER, PW = 0.48 * PER. This usually results in a nice signal without a huge amount of computational need. Note that TR does not have to be exactly 1% of PER. You can choose nice round numbers for TR, TF, and PW. V1 V2 TR TF PW PER t(s)

For a sine wave, use VSIN for your voltage source instead of VAC VOFF is the DC offset – generally set to zero VAMPL is the amplitude, and FREQ is the frequency of the sine wave AC is set to zero

SIMULATION PROFILE You need to create New Simulation Profile

Create a name for your simulation profile The default simulation setting – Time Domain

After that, you can run your simulation by clicking the PLAY button Run PSPICE

MARKERS Enable Current Display Voltage Marker Voltage Differential Marker Current Marker Enable Voltage Display Enable Voltage Display and Enable Current Display can only be used when you set the Simulation Profile as Time Domain

The voltages shown there are node voltages i.e reference to the ground. So, if you need to find the voltage across R1, you use voltage differential marker Theoretically, VR1 = 10 – 3.33 = 6.667V

Display the input voltage signal and the output voltage signal (voltage across R)

How to save the graph? PRINT SCREEN? Can… Easier way: At the Simulation Output - Go to Window – Copy to Clipboard

Go to the desired destination such as Power Point or Word Press Ctrl + V

To save the raw data to Excel (for example) Click on the legend displayed on your simulation graph – once you clicked it will turn red Press Ctrl + C Go to Excel and press Ctrl + V