Click your mouse at two different locations, you will see that you have inserted two DC voltage source instances on schematic. 3Ĥ After that you will see a DC voltage source symbol moving with your mouse. Each part have a unique part name, you can just type the part name to find the part. This is the part name of simple DC voltage source. In the line below Part Name:, please type Vdc. Alternatively, you can just click on the small shortcut icon of Get New Part, as circled in the following figure. You can find these parts from the schematic libraries. In this circuit, we only have a few parts: two DC voltage sources, one analog ground, one resistor, and one NMOS transistor. First you need to place all the parts in your circuit.
Now we are ready to design the circuit in schematics. You can use any filename you like, just type it in File name row. You also need to define a name for the file. Please click on menu File Save, you will see popup window, please select the directory you created just now, for example, c:\john on C: drive. First please save your schematic design as a file. Now you can design your circuit schematic on it.
Click on menu File New, a new blank schematic sheet will appear as below. PSpice Schematics will launch and you see the following interface. Launch PSpice Schematic Student by left-clicking your mouse on Start PSpice Student Schematics. You will save all your design files into this folder.
By creating your own folder, you will have full access to it. Rename the new folder to any name you like, for example, John or something else, and remember this folder path and name. 1Ģ You will see a new folder is created on C: drive.
In Windows Explorer, click on C: drive symbol to select C: drive, and click menu File New Folder, as shown below. Thus first please click on Windows start menu: Start All Programs Accessories Windows Explorer. Because our lab computer has some access limitation on certain system folders, if you are working in a system directory, you may not be able to save your design or your spice library. Design you circuit in Schematics Before we start our design, first please create your own folder in C: drive. Observe the simulation results (traces of signals) in OrCAD PSpice A/D Demo.
Setup analysis to tell SPICE what simulation you need (transient analysis, DC sweep, etc.) 4. Define the SPICE model for NMOS and PMOS transistors. Set the values for all the parts, for example, the resistance values of resistors, the width (W) and length (L) of transistor, etc.
Mark the nodes you are interested in with labels. Make the necessary rotations for the parts, and move the parts to appropriate locations. First insert all the parts without considering their values (for example, place a resistor without considering the resistance value of it, etc.). This can be divided into following substeps. We perform PSPICE schematics circuit simulation according to following steps: 1. In the analysis we will find the I D current and the V DS voltage at the given values of V DD and V GS. The circuit diagram below is what you will build in PSPICE. Xiong This tutorial will guide you through the creation and analysis of a simple MOSFET circuit in PSPICE Schematic. 1 PSPICE Schematic Student 9.1 Tutorial -X.