Re: gEDA-user: Simple TL082 GNU-Cap Simulation

[Steven Michalske <smichalske@xxxxxxxxx>]

On Jun 16, 2009, at 10:29 PM, Michael B Allen wrote:

> On Tue, Jun 16, 2009 at 10:59 PM, al davis<ad252@xxxxxxxxxxxxxxxx>  
> wrote:
>> On Tuesday 16 June 2009, Michael B Allen wrote:
>>> Is there a trick to using this model?
>>>
>>> What am I doing wrong?
>>
>> You forgot to plug in the J-Fet.
>>
>> The Jfet model is not built-in.
>>
>> The stable version doesn't have a Jfet.  The snapshot requires a
>> plugin.  There is one in the  "models-spice3f5" tarball.
>>
>> http://gnucap-2009-06-11-models-spice3f5.tar.gz
>>
>> get it, go to "jfet" .. "make" ... you get a "jfet.so" ..  copy
>> it to your workspace  .. then put the command "load ./jfet.so"
>> ahead of anything else.
>>
>>
>> I need to change the error handler.  Failure to find a model
>> should stop batch mode.  As it stands, you get a warning and it
>> tries to run it with a part missing.
>
> I see. Yeah, using SPICE instead of GNU-Cap gives exactly the results
> I expected. The output plots right over the input.
>
> I think I'll just go with SPICE for now. Since I'm not an EE I'm just
> trying to validate the circuit before I build it.
>
> Regarding Steven's comment, I did not intend for that RC to be a high
> pass filter. I thought 1/(2 * 3.14 * 1000000 * 0.0000001) = 1.59 Hz?
>

oops I dropped a k    now you know why rovers don't work........  :-P

> Mike
>
>
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