Re: [Help-gnucap] spice models

[asomers]

Are you trying to use a JFET ?  Sadly, Gnucap 0.35 has no support for
JFETs.  But I think that the development version of Gnucap does, and I
know that NGSpice supports JFETs.  I recommend trying NGSpice.

On Tue, Jul 6, 2010 at 5:16 PM, Mogliii <address@hidden> wrote:
> A bit better, but...
>
>    Gnucap 0.35
>    The Gnu Circuit Analysis Package
>    Never trust any version less than 1.0
>    Copyright 1982-2006, Albert Davis
>    Gnucap comes with ABSOLUTELY NO WARRANTY
>    This is free software, and you are welcome
>    to redistribute it under certain conditions
>    according to the GNU General Public License.
>    See the file "COPYING" for details.
>    **************************************************************
>    J1 1 3 4 JN
>    ^ ? illegal type
>    .MODEL JN NJF(BETA=1E-4 VTO=-7)
>                 ^ ? not implemented
>    Q2.X1: can't find model: .1
>
>
>
>
> On 07/07/2010 12:11 AM, address@hidden wrote:
>>
>> In your schematic, you need to rename your LM317 from U1 to X1 .
>> Spice expects that all subckt components' reference designators will
>> start with 'X'.  I think there is a gschem attribute which will rename
>> the part from U... to X... during spice netlist generation, but I
>> don't remember what attribute that is.  The easiest thing is to just
>> change the name in the schematic.
>>
>> On Tue, Jul 6, 2010 at 4:46 PM, Mogliii<address@hidden>  wrote:
>>
>>>
>>> OK, I got a bit closer to my aim.
>>>
>>> I found this very helpful page: http://www.brorson.com/gEDA/SPICE/t1.html
>>>
>>> Following this I made the following schematic:
>>> http://users.ecs.soton.ac.uk/mets09r/test3.sch
>>>
>>> I copied the spice model I found here [1] into a subckt file
>>> http://users.ecs.soton.ac.uk/mets09r/LM317.subckt
>>> and gave the LM317 the following attributes:
>>>    device = LM317            (apparently not necessary)
>>>    refdes = U1
>>>    value = LM317             (exactly the same as the .SUBCKT LM317 1 2 3
>>> in
>>> spice file)
>>>    file = LM317.subckt     (file with spice model is located in same
>>> directory as sch file)
>>>
>>> Now when I load it in gspiceui the netlist finds the spicefile and
>>> netlists
>>> all. But when I do the simulation I get the following console output:
>>>
>>>    Gnucap 0.35
>>>    The Gnu Circuit Analysis Package
>>>    Never trust any version less than 1.0
>>>    Copyright 1982-2006, Albert Davis
>>>    Gnucap comes with ABSOLUTELY NO WARRANTY
>>>    This is free software, and you are welcome
>>>    to redistribute it under certain conditions
>>>    according to the GNU General Public License.
>>>    See the file "COPYING" for details.
>>>    **************************************************************
>>>    U1 3 2 1 LM317
>>>                   ^ ? need 1 more nodes
>>>    @@#
>>>    @@@incomplete:d_logic.cc:73:parse_spice
>>>    U1 3 2 1 LM317
>>>                   ^ ? need more nodes
>>>    U1 3 2 1 LM317
>>>                   ^ ? need and,nand,or,nor,xor,xnor,inv
>>>    J1 1 3 4 JN
>>>    ^ ? illegal type
>>>    .MODEL JN NJF(BETA=1E-4 VTO=-7)
>>>                 ^ ? not implemented
>>>    model  is not a logic family (LOGIC)
>>>
>>>
>>> The J1 seems to be the problem?
>>>
>>> Now my questions:
>>>    1) Do I have to rewrite the spice model to work with gnucap?
>>>    2) gEDA includes the LM317 as symbol, but apparently no spice model?
>>> Is
>>> this correct?
>>>
>>>
>>> I appreciate your help in advance
>>>
>>>
>>> [1]
>>>
>>> http://groups.google.com/group/sci.electronics.cad/browse_frm/thread/fbf84f10d86a4d23/e66bf3354362d541?q=LM317+spice+model&rnum=3#e66bf3354362d541
>>>
>>>
>>> On 07/05/2010 08:48 AM, Mogliii wrote:
>>>
>>>>
>>>> Since attachments seem not to be allowed on this mailinglist :((
>>>> (compare
>>>> my previous email) so I uploaded them.
>>>>
>>>> 1) the spicelib thing has been already resolved. Use scones instead of
>>>> make.
>>>>
>>>> 3) Schematics
>>>> http://users.ecs.soton.ac.uk/mets09r/current-source.sch
>>>>
>>>> Explanation of circuit
>>>> http://users.ecs.soton.ac.uk/mets09r/lm317.png
>>>>
>>>>
>>>> Any help appreciated
>>>>
>>>> _______________________________________________
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>>>> address@hidden
>>>> http://lists.gnu.org/mailman/listinfo/help-gnucap
>>>>
>>>>
>>>
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>>>
>>>
>>
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