Symbolic SPICE: A Fresh Look at Circuit Analysis

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#375

From: James F. MacKay
Date: Sun, 28 Apr 1991 23:07

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Have you ever wondered what the design formulas were for a complex analog
circuit?  How about a new second order filter?  How does the
Gain-Bandwidth-Product affect ideal filters?  Sspice can answer all these
questions and more.

Sspice is a Symbolic SPICE circuit analyzer and approximator.  Input files
are in the SPICE format and the program performs a symbolic AC analysis.
Symbolic determinants are sorted with the additional option of numeric
evaluation and even symbolic approximation.  Besides accepting many of the
standard SPICE definitions, Sspice also offers a variety of low and high
frequency symbolic transistor models as well as some linear ICs.  Menu
options are available for evaluating 2nd order active circuits.  These
include identifying and solving filter formulas and approximating pole
shift due to finite op-amp gain-bandwidth-product.

A demo version of Sspice is available from Simtel20 via anonymous ftp to:
WSMR-SIMTEL20.Army.Mil

Directory PD1:<MSDOS.EDUCATION>
SSPICE10.ZIP  B   91659  910415  Symbolic SPICE: Ckt analyzer and approximator

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From: mackay@frith.egr.msu.edu (James F. MacKay)
Newsgroups: comp.org.ieee
Subject: Symbolic SPICE: A Fresh Look at Circuit Analysis
Keywords: circuit analysis spice electronics
Message-ID: <1991Apr28.230726.14229@msuinfo.cl.msu.edu>
Date: 28 Apr 91 23:07:26 GMT
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Organization: Michigan State University
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