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seminar class
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Joined: Feb 2011
17-02-2011, 09:33 AM

The Simulation Program with Integrated Circuit Emphasis (SPICE) circuit simulation tool was first developed in the early 1970s. It was written in the FORTRAN programming language and was intended to support the early data entry methods of this period. SPICE was immediately valuable to allow circuit designers to analyze circuit systems, in particular as the complexity of circuits began to expand with the arrival of the first integrated circuits. It is certainly one of the most important tools in Electrical Engineering and is an example of one of the first tools for Computer Aided Design.
SPICE has evolved with many advances in numerical analysis methods for accurate and fast computation and has appeared in many commercial forms. SPICE has been ported to many platforms and the version that operates over the Windows operating system is PSpice.
The first SPICE users designed circuits with manual circuit drawing tools. Then, inspection of the circuit design was used to generate a text-based description of the circuit design. Even today this still occurs in certain special instances. However, the arrival of graphical drawing tools allows a circuit designer to directly draw circuit schematics using circuit design tools and then special “capture” tools operate to “capture” the schematic and generate the text-based description of the circuit design, automatically. The versions of PSpice available to us operate in this way. This is a great advantage for the engineering design process – this provides the designer with the ability to
focus directly on a visual description of their system and obtain circuit operation numerical and graphical results in an automatic, convenient process.
This Tutorial describes the development of two typical, simple circuits. The first is a circuit that will demonstrate the ability to quickly compute voltage and current values. The second will demonstrate the
ability to compute time-dependent circuit response.
You may use the SEASnet PCs for your work. However, if you decide to install Orcad Family Release 9.2 Lite Edition or Release 9.1 Student Version software, then in the installation process you will be presented
with options as to which components to install. Ensure that you have selected to install Capture and PSpice. You may install other options in addition to these.

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