Re: [Qucs-devel] Exporting netlists

[Chris <chr...@ym...>]

That confirms what I thought. I have written something robust enough to 
deal with this, but I wanted to be sure that my guesses were correct.
Thanks Thomas!

I have already posted the questions below, but since I now have your 
attention :)

    1) This component line in a sim file refers to the same net twice,
    that doesn't look right to me.

    BJT:T1 _net16 *_net17* _net18 *_net17* Type="npn"

    2) In the component lines in a sim file, the net names appear to
    start with '_net', but there is also 'gnd', are there any other
    special net names like this?

I'm hoping these are the last questions, as the script is working apart 
from problems with (1).

Chris



On 09/04/2020 1:45 pm, Thomas.lepoix wrote:
> I don't remember having ever found a documentation about the netlist format.
>
> As far as I know, each line follow the same model :
>
> type:label net property="value"
>
> net fields are "wire" labels, for example, in the following sequence there is a wire that connects the second port of the diode D1, the first port of D2 and the first port of D3.
>
> Diode:D1 _net0 _net1 Is="1E-11" N="1.27" Rs="3.858 ...
> Diode:D2 _net1 _net2 Is="1E-11" N="1.27" Rs="3.858 ...
> Diode:D3 _net1 _net3 Is="1E-11" N="1.27" Rs="3.858 ...
>
> property fields are also present in the .sch file.
>
> It seems to me that def paragraphs wrap subcircuits. "Z_Diodes_1N756" is a particular model of diode. So this library component is a subcircuit wrapping a classic diode component with particular properties.
>
> "PVR100AZ_B12V_mod" is a more complex library component so it wraps another subcircuit "PVR100AZ_B12V" with its own def paragraph and then used through the "sub" component. that's why defs can be nested, a def contain a piece of schematic.
>
> however that is true that the file indentation is rather strange.. I guess your parser have to be robust enough to this kind of randomness.
>
>
> ‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
> On Thursday 9 April 2020 00:13, Chris via Qucs-devel <quc...@li...> wrote:
>
>> Files created using qucs -i filename1 -o filename2 -n
>>
>> Is there a definition of these files, and if so where?
>>
>> I think I can just use the component list at the end, so I need to skip
>> the '.Def's, but they are confusing, since sometimes the .Def:End starts
>> in the first column and sometimes not, and sometimes the .Def paragraphs
>> are nested. Are they supposed to be that way?
>>
>> .Def*:*Z_Diodes_1N756 _net0 _net1
>>        Diode:D1 _net0 _net1 Is="1E-11" N="1.27" Rs="3.858"
>> Cj0="2.749E-10" Vj="0.75" M="0.33" Fc="0.5" Tt="5E-8" Bv="8.123"
>> Ibv="0.01" Af="1" Kf="0"
>> .Def:End
>>
>> .Def:PVR100AZ_B12V_mod _net4 _net1 _net2 _net3 _ref
>> Sub:X1 _ref _net1 _net2 _net3 _net4 Type="PVR100AZ_B12V"
>> .Def:PVR100AZ_B12V _ref _net1 _net2 _net3 _net4
>> BJT:Q1 _net1 _net4 _net3 _ref Type="npn" Is="9.198e-014" Nf="1.003"
>> Ise="4.468e-016" Ne="1.65" Bf="338.8" Ikf="0.4913" Vaf="107.9"
>> Nr="1.002" Isc="5.109e-015" Nc="1.071" Br="29.48" Ikr="0.193" Var="25"
>> Rb="1" Irb="1000" Rbm="1" Re="0.2126" Rc="0.143" Xtb="0" Eg="1.11"
>> Xti="3" Cje="3.825e-011" Vje="0.7004" Mje="0.364" Tf="5.229e-010"
>> Xtf="219.7" Vtf="3.502" Itf="7.257" Ptf="0" Cjc="1.27e-011" Vjc="0.4431"
>> Mjc="0.3983" Xcjc="0.4555" Tr="7e-011" Cjs="0" Vjs="0.75" Mjs="0.333"
>> Fc="0.905"
>> Diode:D1 _net1 _net2 Is="9.794e-015" N="1.101" Bv="13" Ibv="0.005"
>> Rs="0.3363" Cj0="4.377e-011" Vj="0.5656" M="0.3289" Fc="0.5"
>> .Def:End
>> .Def:End
>>
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>