Re: gEDA-user: new to gEDA, diode trouble

["Mark Lorenz" <markjlorenz@xxxxxxxxx>]

Thanks for the response!  Please see my follow up questions:

>Hi Mark,

>On Donnerstag, 15. Mai 2008, Mark Lorenz wrote:
>> This is my first attempt at gEDA, so please forgive my ignorance.
>> I'm trying to model a Cockroft-Walton voltage multiplier
>> (http://en.wikipedia.org/wiki/Cockcroft-Walton_generator) as a simple
>> first test circuit.  I had no problem using gschem to make the
>> circuit schematic, but i run into problems with my ngSpice
>> simulation.  It tells me:
>>
>> Error on line 12 : d4 4 higherout unknown
>> unable to find definition of model unknown - default assumed

>You've not added a diode model. Thus a simple diode model is used.

   Where can I find some instructions on obtaining and adding new models?

>> I get similar error message for all 4 diodes.  The simulation results
>> are unreasonable, so I don't think the "default" (what ever that my
>> be) diode model is what I want.
>>
>> I have attached my netlist and schematic file.

>
In the schematic you should replace the buses with nets.
>The bus does not connect your diodes as you'd expect (see your netlist).

>
Additionaly you don't have a net with the netname "0" in the netlist.
>spice needs that reference net. You can add that with a GND symbol
>(gnd-1.sym).

>
Regards
>Werner

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