Analytic Circuit Solver
Do you ever need to derive system transfer functions of analog circuits or filters? Once you get beyond a few components, the algebra can become quite tedious. Why not use the symbolic toolbox to handle this for you?
Let's assume that you have a netlist of resistors, capacitors, inductors and even opamps.
The netlist might look like this:
====================
# example op amp circuit
#
r1 vi e1
r2 e1 e2
c2 e2 vo
opamp1 0 e1 vo
c3 e1 vo
====================
Note that there are no component values; only the topology is presented. The netlist file needs to have a 'vi' and 'vo' node.
This pair of .m files will read in the file, and provide the transfer function in analytic form, allowing you to substitute real component values and even run your own sensitivity analyses. I find this helpful in looking at what resistors or capacitors combination affects which poles and zeros.
The output might look like this:
The solutions are:
e1 = 0
e2 = -(c2*r2)/(r1*(c2 + c3 + c2*c3*r2*s))
vi = 1
vo = -(c2*r2*s + 1)/(r1*s*(c2 + c3 + c2*c3*r2*s))
Or if you want to make it look nice, you can run:
>> pretty(xsoln(end))
c2 r2 s + 1
- ---------------------------
r1 s (c2 + c3 + c2 c3 r2 s)
Enjoy!
Raj
Zitieren als
Raj Sodhi (2024). Analytic Circuit Solver (https://www.mathworks.com/matlabcentral/fileexchange/42129-analytic-circuit-solver), MATLAB Central File Exchange. Abgerufen .
Kompatibilität der MATLAB-Version
Plattform-Kompatibilität
Windows macOS LinuxKategorien
- Signal Processing > Signal Processing Toolbox > Digital and Analog Filters > Analog Filters >
- AI, Data Science, and Statistics > Text Analytics Toolbox >
Tags
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!Live Editor erkunden
Erstellen Sie Skripte mit Code, Ausgabe und formatiertem Text in einem einzigen ausführbaren Dokument.
Version | Veröffentlicht | Versionshinweise | |
---|---|---|---|
1.0.0.0 |