Learn Basic PCB Design with Allegro, OrCAD Tool.

1. Entering the Schematic

This section describes how to use OrCAD© Capture-PSpice© to enter the schematic for the Headphone Amplifier example design.

Note: The instructions throughout this worked example assume some familiarity with the concepts of entering a schematic, running a simulation and designing a board, if necessary, please get some familiarity with these basic tasks before attempting to work through this example.

Starting the Project

Begin by starting OrCAD Capture, or OrCAD Capture CIS, any licensed version, including the OrCAD Trial, may be used for this example. Then, in the opened Capture application, use File>New Project to start a New Project, name the project Headphone, for example, check the Enable PSpice Simulation, and specify a folder for the project location.

Base the new project on the empty.opj existing project when prompted for a project template.

Adding the Libraries

Start by adding the Libraries. 

Left-click on the "+" for "headphone.dsn" and then the "+" for "SCHEMATIC1", double-click on the Page1 entry to open the Schematic Page.

 Left-click in the Schematic Page to activate it and the use use 

Place > Part from the menu.

 In the Place Part form at the right, left-click the Add Library icon to open a browser for the required libraries.

When the file browser opens to select the libraries,

 add all of the libraries from the default  location:   C:\Cadence\SPB_17.4 then tools\Capture\library\PSpice for the PSpice libraries with left-click on the first, 1_shot, library then scroll down to the end of the list of files and shift+left-click select the last, Zetex, library, t

hen left-click>Open to add the selected libraries.

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