Re: gEDA-user: How to do transient analysis?

[Peter Kaiser <peter@xxxxxxxxxxxx>]

Hi David,

Switchcap is, as far as I understand, a simulator to design swich capacitor 
circuits. 

When you look for something like PSpice, gnucap or ngspice are very good open 
source altenatives. Stuart wrote a very good Howto, that descirbes the 
precedure with gschem, gnetlist and spice. You can find it at:

http://www.brorson.com/gEDA/HOWTO/

Once you got a correct netlist, the easiest way for newbies is to work with 
spice in interactive mode. Just start the simulation with:

tran <tstep> <tstop>


Have fun and feel free to ask when more questions are comeing up. We 
continuously try to improve the flow.

Peter




Am Samstag, 9. April 2005 01:34 schrieb David Logan:
> What would be the best way to do transient analysis using geda? I have
> pspice instructions, which are easy enough. I just define a circuit like:
>
> gnd -> IDC -> t_Close (t=0) -> R -> L -> gnd. Then I go into "Transient
> analysis" setup, set "Print Step" and "Final Time", and I get a graph of
> my capcitor voltage or inductor current.
>
> I have looked at switcap stuff in geda, but I don't have a switcap
> program. If I do gnetlist -g switcap, it basically gives me an empty
> circuit, and anything else it says it doesn't understand the components.
> I spent a few minutes looking at gnucap, which didn't like my circuit
> setup either. (gnetlist doesn't correctly fill out my S# line.)
>
> So, what's the best way?
>
> Thanks!
> David Logan