Re: gEDA-user: Simulation questions using gnucap

[al davis <ad151@xxxxxxxxxxxxxxxx>]

On Tuesday 01 January 2008, Robert Butts wrote:
> Below is the output from gnetlist and gnucap.  Toward the
> bottom is the gnucap output where it lists "?" faults.  I
> suspect the problem is with the TL072's subcircuit I
> downloaded from TI.  I am not able to find any info on the
> components used in the subcircuit and therefore am having a
> tough time finding what is causing the faults. 

> Also gnucap's 
> documentation refers you to a tutorial that I haven't been
> able to find.

There is a file "acs-tutorial" in the "doc" directory.  

It was written a long time ago and doesn't describe changes made 
since then.

>
> [rob@localhost project-micSwitch]$ gnucap micSwitch4Sim.cir

I am not sure what you intend, but you are running it in 
interactive mode, using the circuit in micSwitch4Sim.cir.

> Gnucap 0.35

> micSwitch4Sim.sch EGND 99  0 POLY(2) (3,0) (4,0) 0 .5 .5
>                      ^ ? need 1 more nodes
>   EGND 99  0 POLY(2) (3,0) (4,0) 0 .5 .5
>                            ^ ? what's this?
>   FB    7 99 POLY(5) VB VC VE VLP VLN 0 4.715E6 -5E6 5E6 5E6
>                      ^ ? what's this?

High order POLY is not supported yet.

>   J1   11  2 10 JX
>   ^ ? illegal type
>   J2   12  1 10 JX
>   ^ ? illegal type
> .MODEL JX PJF(IS=15.00E-12 BETA=270.1E-6 VTO=-1)
>              ^ ? not implemented

JFET is not built-in.  To use a JFET, you need the development 
version, and the JFET plugin, which is in the "models-spice3f5" 
tarball.


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