Cadence PSPICE SCHEMATIC Uživatelský manuál

Introduction to OrCAD Capture and PSpiceProfessor John H. DaviesSeptember 18, 2008AbstractThis handout explains how to get started with Cadence OrCAD

Figure 11: Dialogue box for changing the value of a component, VDC here.• Move parallel to the grid, horizontally or vertically.• Left-click again to

Figure 12: Final circuit of potential divider, fully connected, with the correct values.Figure 13: Dialogue box to create a new simulation profile.Figu

Figure 15: Simulated voltages and currents for the simple potential divider.in figure 14 on the previous page. This is where you tell PSpice what to do

Figure 16: Simulation profile for a DC sweep.Trace > Add Trace. . . from the menu bar but it’s easier to return to the Capture window, leavingPSpice

Figure 18: PSpice A/D with a plot of the voltage in the potential divider.moved across the graph using the mouse or the ← and → keys. A dialogue box s

Figure 19: Property editor for a parameter block. A new parameter Rload has been added witha default value of 400.PARAM block, use it in the circuit,

Figure 20: Potential divider with the value of R2 given by the parameter Rload. Don’t forgetthe curly brackets!Figure 21: Dialogue box to create a new

Figure 23: PSpice A/D with a plot of the voltage in the potential divider for each value of theload resistance. This is the Alternate Display, selecte

Figure 24: Simulation settings for a parametric sweep alone. The Analysis type is DC sweep.An obvious question is: Which curve goes with which paramet

Figure 25: Plot of voltage as a function of Rload.tain frequencies from a signal or pick out a frequency of interest. For example, a low-passfilter all

Figure 1: Dialogue box to choose product when Capture starts. Select OrCAD Unison Ultra.which you will use throughout your degree. SPICE was developed

0OutputC110nC110nVin1Vac0VdcVin1Vac0VdcR110kR110kFigure 26: Filter formed by a resistor and capacitor.• Don’t forget the ground symbol for the zero no

Date/Time run: 09/17/08 10:23:11** Profile: "SCHEMATIC1-simplesweep" [ C:\Documents and Settings\John Davies\My Documents\OrCAD intro\RC fr

Date/Time run: 09/17/08 10:58:17** Profile: "SCHEMATIC1-simplesweep" [ C:\Documents and Settings\John Davies\My Documents\OrCAD intro\RC fr

0OutputVV11VdcV11VdcC110nC110nR110kR110kFigure 30: Filter formed by a resistor and capacitor, fed by a constant voltage.everything should have settled

Figure 32: Property Editor for the capacitor with an initial condition (IC) set to 0.linearly and find the point at which it cuts the time axis. This s

Table 1: Parameters for the VPULSE source.name parameter notesV1 value of voltage outside pulse usually 0 VV2 value of voltage inside pulseTD delay be

Figure 2: Dialogue boxes to create a directory for a new project.1. Select File > New > Project. . . from the menu bar. This brings up the New P

Figure 3: Final dialogue box to create a PSPice project. Select Create a blank project.2.1 Capture windowsThere are three windows in the screenshot of

Figure 4: Screen of Capture for a new project before the circuit is drawn. The Schematicwindow is active and the toolbar on the right is therefore vis

Place partNet alias (names a node)Add or remove junctionPlace power connectionPlace hierarchical blockHierarchical pinShow that pin is deliberately no

Figure 7: Components for potential divider before connecting them.Capture includes a database with a vast number of components, which are organised in

Figure 9: Dialogue box for adding a library to Capture.that the libraries are in the pspice folder and navigate to it if necessary. Select analog.olba

Figure 10: Dialogue box for adding a ground connection.• Choose Place > Ground. . . from the menu bar or click the Place ground connectionbutton on