Looking for a software package, hopefully a good free or open source package, that can handle filter simulation. And general electronics simulation, I suppose, that would be nice. I'm aware of the Duncanamps tonestack calculator, but I'd like something more flexible, that allowed me to create my own schematic and see a response curve out of it.
I know how to use a scientific graphing calculator, but I'd really like something optimised for what I'm trying to do.
Failing that, where do I look for the formulas and equasions for filter circuitry? SHould I just google, or does someone know a keen place to find this info?
Thanks!
You should probably try to get a copy of the PSpice student edition. It's not very easy to find but it should be out there somewhere. Sorry, I can't provide a link. ORCAD may be able to help though... There are probably other similar packagaes out there also, but I do find PSpice to be great for the sort of thing you are after.
I probably have the original zip file myself somewhere but it's on my Laptop and I use a MAC for internet stuff. PM me if you are really struggling or if you can't find an alternative.
You might want to give LTSpice/SWCadIII a try http://ltspice.linear.com/software/swcadiii.exe (http://ltspice.linear.com/software/swcadiii.exe)
It's free and there's also a cool yahoo user group. There you can find even sims for Vactrols.
Markus
http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=1406&dDocName=en010007 (http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=1406&dDocName=en010007)
http://focus.ti.com/lit/an/sbfa001a/sbfa001a.pdf (http://focus.ti.com/lit/an/sbfa001a/sbfa001a.pdf)
http://focus.ti.com/docs/toolsw/folders/print/filterpro.html (http://focus.ti.com/docs/toolsw/folders/print/filterpro.html)
http://www.circuitsage.com/filter.html (http://www.circuitsage.com/filter.html)