SLiCAP symbolic circuit analysis, documentation
Documentation and release notes for the latest version of our free web application for our Symbolic Linear Circuit Analysis Program SLiCAP, can be found here.
SLiCAP version 3.1 release notes
June 05, 2009: version 3.1 of SLiCAP is released! It has new components added! The enhancements are:
- Model for a voltage-controlled voltage source with series impedance in the output port: 'EZ'
- Models for voltage- and current-feedback operational amplifiers: 'OC' and 'OV', respectively:
The transimpedance gain of the current-feedback operational amplifier and the voltage gain of the voltage-feedback operational amplifier can be selected as reference variable for calculation of the asymptotic gain, the loopgain and the direct transfer.
- Models for CE and CS differential pairs: 'QD' and 'MD', respectively:
The transconductance of the pair can be selected as reference variable for calculation of the asymptotic gain, the loopgain and the direct transfer.
- Updated manual with the new component models
- Updated schematic capture and netlist generation plug-in for for SIMetrix Introduction:
The SLiCAP workshop environment has been updated with the new components
- Minor corrections and improvements.
Schematic Capture for SLiCAP
May 18, 2009: You can now generate SLiCAP netlists with SIMetrix Introduction. For this, download SIMetrix Introduction and the workshop environment, and follow the installation instructions.
SLiCAP version 3.0 release notes
April 21, 2009: version 3.0 of SLiCAP is released! It has the syntax check module completely rewritten in python and removed from the main program. The enhancements are:
- Improved overview of data, element values and expanded netlist
- Matrix representation in integral form not longer possible
- Updated manual
- Minor corrections and improvements
- HTML output with expressions in .png graphics format.
SLiCAP version 2.2 release notes
November 26, 2008: version 2.2 of SLiCAP is released! The enhancements are:
- MOSFET small-signal model implemented (see manual for more information)
- Vertical Bipolar Junction Transistor small-signal model implemented (see manual for more information)
- Updated manual
- Minor corrections and improvements.
SLiCAP version 2.1 release notes
November 13, 2008: version 2.1 of SLiCAP is released! The enhancements are:
- Numeric data in value fields gives accurate pole-zero results (known issue solved)
- Speed considerably improved for many types of circuits (known issue improved)
- Minor corrections and improvements.
SLiCAP version 2.0 release notes
October 28, 2008: version 2.0 of SLiCAP is released! The enhancements are:
- New .symbolic .numeric and .plot instructions
- Re: real part of gain, voltage or current
- Im: imaginary part of gain, voltage or current
- Delay: group delay of gain, voltage or current
- Y-range definition (zoom) for time and frequency domain plots
- New options for control of matrix building and output
- SLiCAP by default uses MNA matrix in differential form, it can be changed with .o mna_int to the integral form
- SLiCAP by default eliminates pole-zero pairs whose relative distance is less than the displayed accuracy. These non-observable poles and zeros can be made visible using the option: .o no_cancel .
- SLiCAP by default outputs graphics in .png (portable network graphics) format. Vector output is now available in eps (encapsulated postscript) format, using the option .o graph_eps .
- For a complete overview of symbolic circuit analysis program, see SLiCAP manuals version 2.0
SLiCAP output formats
SLiCAP is a web-based MuPAD application. MuPAD (R) is a product of SciFace Software GmbH & Co. Recently, MuPAD has been acquired by The Mathworks. It is now available as the symbolic toolbox in MatLab. Expressions in the text output file (slicap.out), can be imported by MuPAD. With minor adaptions, they can be imported in sympy, scipy, numpy, octave and maxima.
Apart from the text output file, SLiCAP generates LaTeX output (slicap.tex) and graphics in .png format. With the option graph_eps, SLiCAP uses the eps format for graphics.
The best way to view your SLiCAP results is to display the MathML output (slicap.xhtml) in your browser. The SLiCAP LaTeX output is converted into MathML (XHTML) format with TeX4ht. Please notice that not all browsers are capable of displaying MathML. MathML can be displayed directly with Mozilla Firefox. Microsoft Internet Explorer requires the MathPlayer plug-in of Design Science for proper display. Opera is capable of displaying MathML but the results are not as good as with Firefox. Safari is not capable of displaying MathML.
For browsers not capable of displaying MathML, use the HTML output (slicap.html). For this purpose, the SLiCAP LaTeX output is converted into HTML format with TeX4ht. Complex equations are converted to graphics in .png format.
With Scientific Workplace you can import SLiCAP output, continue symbolic and numeric calculations, and generate graphs and beautifully typeset reports, articles and books from your SLiCAP output.
With Scientific Word you can import SLiCAP output and generate beautifully typeset output, but you cannot perform further numeric or symbolic calculations on your SLiCAP data or generate graphs from it.
With Scientific Notebook you can import SLiCAP output, continue symbolic and numeric calculations and generate graphs from your SLiCAP output, but you cannot typeset the output.