SCAM- A tool for symbolically solving circuit equations

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

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)

[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.

[Predrag Vukovic]

 

[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.

[Kiranmai Padakanla]

We are not able to acess the complete description(theory)of the SCAM tool(the site is not at all accessible)

[Federico Forte]

Good job! Thanks

[Norm Dyer]

don't know yet - i will tell you after downloading and trying it out

[Bahram Gharadaghi]

Thanks!

[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

[somo coulibaly]

I've tried it. it is a very excellent job. Please try to add transistors for amplifier circuits investigating.

[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)

[Juan Pablo Hernández Vogt]

Excelent job! I had to create a wrapper class for scam.m in some test. I'll put here to share with you. Thanks you.