5.0 | 6 ratings Rate this file 69 downloads (last 30 days) File Size: 3.54 KB File ID: #3443

SCAM- A tool for symbolically solving circuit equations

15 May 2003 (Updated 21 Nov 2003)

This tool starts with a netlist (similar to spice) and generates and solves the resulting circuit.

File Information
Description	This tool starts with a netlist (very similar to spice) and generates and solves the resulting circuit equations. The symbolic results can be evaluated to give numeric results if desired. Handles resistors, capacitors, inductors and op-amps. A full description (including theory) is at: http://www.swarthmore.edu/NatSci/echeeve1/Ref/mna/MNA1.html
Acknowledgements	This submission has inspired the following: EC-SIM 1.1
Required Products	Symbolic Math Toolbox
MATLAB release	MATLAB 6.5 (R13)
Zip File Content
Other Files	license.txt, scam.m

Tags for This File
Everyone's Tags	circuit, electronics, netlist, spice
Tags I've Applied
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Comments and Ratings (10)
18 Aug 2003	Rasmus Anthin	Perfect! Just what I needed. Unfortunately I don't have the symbolic math toolbox but the reference material you put together is very descriptive and helped me a lot to move on with my matlab circuit simulator. Thanx!!! P.S. It would be nice if you could write about how to do analysis on nonlinear components too. D.S.
16 Feb 2004	Predrag Vukovic
07 Jan 2005	satyajit silveria	Excellent. But there was a problem initially running scam.m on Linux Redhat 9.0. The problem was that maple (a graphics engine I suppose), which was compatible with Redhat 8, was incompatible with Redhat 9. The fix is to add the following line to /etc/profile: "export LD_ASSUME_KERNEL=2.4.1" Then in the tradition of UNIX, just ignore the warning messages. It works find thereafter.
07 Aug 2005	Kiranmai Padakanla	We are not able to acess the complete description(theory)of the SCAM tool(the site is not at all accessible)
07 Apr 2006	Federico Forte	Good job! Thanks
05 May 2006	Norm Dyer	don't know yet - i will tell you after downloading and trying it out
30 Mar 2007	Bahram Gharadaghi	Thanks!
13 May 2007	Patrick Vogelsang	Excellent job !! Extremely usefull for lazy EE's. What I miss is the inplementation of dependent sources. Adding for example a VCVS (E) to SCAM helps to investigate circuits with non ideal opamps. Please implement E,F,G & H
25 Jan 2008	somo coulibaly	I've tried it. it is a very excellent job. Please try to add transistors for amplifier circuits investigating.
29 Sep 2008	Phased Array	Nice! Very impressive! I also have code that will allow for a kind of symbolic description of the circuit (It has its uses, but obviously Spice format is much better). If you're game, I would be interested in collaboration. phasedarray @ hotmail.com (remove the spaces)

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Updates
22 May 2003	There was an error for circuits with no voltage sources. Changed name of submission.
21 Nov 2003	There was an error on some systems with function "str2Num". I changed it to "str2num" which is defined by MatLab

Tag Activity for this File
Tag	Applied By	Date/Time
electronics	Erik Cheever	22 Oct 2008 07:01:37
circuit	Erik Cheever	22 Oct 2008 07:01:37
spice	Erik Cheever	22 Oct 2008 07:01:37
netlist	Erik Cheever	22 Oct 2008 07:01:37

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