qucs-help Mailing List for Quite Universal Circuit Simulator

I didn't mean to modulate within Ngspice, but to create the complete FM 
signal elsewhere, for instance using Qucsator and saving the result as 
.dat, and then creating a custom file source in Ngspice. This wouldn't 
work in circuits with some feedback from the rest of the circuit to a 
node before the generation of the modulating signal.

The block diagram would be

Ngspice previous circuit ---> modulating signal ---> mod.dat ---> 
Qucsator integrator + PM modulator ---> FM.dat ---> Ngspice file source 
---> rest of the Ngspice circuit

It's a bit indirect, needing two simulator engine changes, but I guess 
it would do the job if no feedback is required

Regards,

Federico Miyara

PD: Sorry I unintentionally sent this and the previous email privately. 
May I forward them to the list just in case somebody might find them useful?


On 6/10/2025 14:04, Vadim Kuznetsov wrote:
> Hello Federico,
>
> Ngspice doesn't support modulating from external source. This task 
> cannot be resolved at GUI level. It's required to design XSPICE 
> extension for Ngspice that implements this device.
>
> On 10/6/25 19:43, Federico Miyara wrote:
>>
>> Vadim,
>>
>> Thank you, sorry, I hadn't noticed it perhaps because it is labelled 
>> SFFM instead of just FM. However these sources seem to allow 
>> sinusoidal modulating signal only. It would be very useful to be able 
>> to apply an arbitrary modulating signal, particularly the output of a 
>> previous circuit.
>>
>> One possible workaround would be to previously create the signal, 
>> save it to a .dat file and use it in a file-based source.
>>
>> Regards,
>>
>> Federico Miyara
>>
>>
>> On 6/10/2025 06:39, Vadim Kuznetsov wrote:
>>> Hello Federico,
>>>
>>> Modulated sources are available for SPICE mode too. Scroll the 
>>> sources group on the left panel to the down and look for V(SFFM) 
>>> I(SFFM), sources. These components represent frequency modulated 
>>> sources.
>>>
>>> Regards,
>>> Vadim
>>>
>>> On 10/6/25 06:18, Federico Miyara wrote:
>>>>
>>>> Dear all,
>>>>
>>>> I find that Qucs-S doesn't have a phase or frequency modulator 
>>>> source under Ngspice as is the case with Qucsator. The problem is 
>>>> when one actually needs to use SPICE. Is there a simple way to 
>>>> create such a source?
>>>>
>>>> Regards,
>>>>
>>>> Federico Miyara
>>>>
>>>
>>
>>
>


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Vadim,

Thank you, sorry, I hadn't noticed it perhaps because it is labelled 
SFFM instead of just FM. However these sources seem to allow sinusoidal 
modulating signal only. It would be very useful to be able to apply an 
arbitrary modulating signal, particularly the output of a previous circuit.

One possible workaround would be to previously create the signal, save 
it to a .dat file and use it in a file-based source.

Regards,

Federico Miyara


On 6/10/2025 06:39, Vadim Kuznetsov wrote:
> Hello Federico,
>
> Modulated sources are available for SPICE mode too. Scroll the sources 
> group on the left panel to the down and look for V(SFFM) I(SFFM), 
> sources. These components represent frequency modulated sources.
>
> Regards,
> Vadim
>
> On 10/6/25 06:18, Federico Miyara wrote:
>>
>> Dear all,
>>
>> I find that Qucs-S doesn't have a phase or frequency modulator source 
>> under Ngspice as is the case with Qucsator. The problem is when one 
>> actually needs to use SPICE. Is there a simple way to create such a 
>> source?
>>
>> Regards,
>>
>> Federico Miyara
>>
>


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Hello Federico,

Modulated sources are available for SPICE mode too. Scroll the sources 
group on the left panel to the down and look for V(SFFM) I(SFFM), 
sources. These components represent frequency modulated sources.

Regards,
Vadim

On 10/6/25 06:18, Federico Miyara wrote:
>
> Dear all,
>
> I find that Qucs-S doesn't have a phase or frequency modulator source 
> under Ngspice as is the case with Qucsator. The problem is when one 
> actually needs to use SPICE. Is there a simple way to create such a 
> source?
>
> Regards,
>
> Federico Miyara
>

Dear all,

I find that Qucs-S doesn't have a phase or frequency modulator source 
under Ngspice as is the case with Qucsator. The problem is when one 
actually needs to use SPICE. Is there a simple way to create such a source?

Regards,

Federico Miyara

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Hello Károly,

The SCH file extension is widely used by many proprietary and 
open-source EDA CADs. But SCH may contain different file structure 
inside. Your file manger is not aware which program uses which SCH file. 
Please open SCH file shipped with Qucs using File->Open action from the 
application main menu.

I assume you have meant Qucs-S, because Qucs doesn't provide Windows 
binaries. Please ask questions about Qucs-S here: 
https://github.com/ra3xdh/qucs_s/discussions It is a different 
application maintained by different team.

Regards,
Vadim Kuznetsov

On 9/5/25 01:06, Károly Frastaczky wrote:
> Dear Program Creators!
>
>
>
> I am a beginner.
>
> I would like to model radio engineering circuits using the qucs program.
>
> I downloaded the program in a Windows 10 environment.
>
> I would like to view example circuit diagrams by clicking on the Example
> tab.
>
> These have the sch file extension. I tried to view them using the Viewer
> info-schemata CAD (version 23.3.0.) offered in the program.
>
> It did not work. I ask you to solve the problem.
>
>
>
> Thank you in advance for your help.
>
> Best regards:
>
> Károly Frastaczky
>
> _______________________________________________
> Qucs-help mailing list
> Quc...@li...
> https://lists.sourceforge.net/lists/listinfo/qucs-help

sorry, the previous letter is below in English

Dear Program Creators!



I am a beginner.

I would like to model radio engineering circuits using the qucs program.

I downloaded the program in a Windows 10 environment.

I would like to view example circuit diagrams by clicking on the Example
tab.

These have the sch file extension. I tried to view them using the Viewer
info-schemata CAD (version 23.3.0.) offered in the program.

It did not work. I ask you to solve the problem.



Thank you in advance for your help.

Best regards:

Károly Frastaczky

Dear Program Creators!



I am a beginner.

I would like to model radio engineering circuits using the qucs program.

I downloaded the program in a Windows 10 environment.

I would like to view example circuit diagrams by clicking on the Example
tab.

These have the sch file extension. I tried to view them using the Viewer
info-schemata CAD (version 23.3.0.) offered in the program.

It did not work. I ask you to solve the problem.



Thank you in advance for your help.

Best regards:

Károly Frastaczky

You're welcome Juan. The most minimalistic solution I could come up
with was to use an equation defined 1-port. But still have to use it
with a port. However, compared to being just a "graphic" it isn't
restricted to just a Smith chart.

If you want to try this, just add a "Equation Defined RF Device" to
your circuit. Change it to a 1-port and add this equation:

 P11 = (VSWR - 1)*exp(-j*2*pi*(F - F_min)/(F_max - F_min))/(VSWR
+ 1)

To be honest, this is the way I do it to keep from cluttering the
schematic :-)

QUCS is an amazing work. Thanks to all the developers for making it
available to everyone to enjoy!


-----Original Message-----
From: j.l...@lm...
To: du...@ba..., quc...@li...
Subject: RE: [Qucs-help] Smith chart constant VSWR circles
Date: Sun, 13 Apr 2025 08:56:23 -0500

Hi Darrell,

Thanks. I didn't think about using a circuit. That works. The list did
remove your image.

 It would be nice if it could be added directly to the graph.

Thanks again


-----Original Message-----
From: Darrell Barabash <du...@ba...> 
Sent: Friday, April 11, 2025 11:51 AM
To: quc...@li...
Subject: Re: [Qucs-help] Smith chart constant VSWR circles







Hi Juan,

You can do it as a graphic but I found that the easiest way is to use a
simple circuit added to the main schematic. See attached image if it
doesn't get removed by this list.

Otherwise, If it does, using the Equation block ... set Zo, F_min,
F_max and VSWR_value. 

Then add equations for   L_vswr = 1.5e8/(F_max - F_min)   and   R_vswr
= VSWR_value*Zo

Then add to the schmatic:

   1) a Zo ohm transmission line of ... L = L_vswr, and;
   2) terminate it with a resistor of value ... R_vswr
   
F_min and F_max should be the range of your simulation.

Darrell ...

-----Original Message-----
From: j.l...@lm...
To: quc...@li...
Subject: [Qucs-help] Smith chart constant VSWR circles
Date: Fri, 11 Apr 2025 09:49:57 -0500

Is there an easy way to plot constant VSWR circles on a smith char in
QUCS?

 

Juan 

 

 


_______________________________________________
Qucs-help mailing list
Quc...@li...
https://lists.sourceforge.net/lists/listinfo/qucs-help

_______________________________________________
Qucs-help mailing list
Quc...@li...
https://lists.sourceforge.net/lists/listinfo/qucs-help

Hi Darrell,

Thanks. I didn't think about using a circuit. That works. The list did remove your image.

 It would be nice if it could be added directly to the graph.

Thanks again


-----Original Message-----
From: Darrell Barabash <du...@ba...> 
Sent: Friday, April 11, 2025 11:51 AM
To: quc...@li...
Subject: Re: [Qucs-help] Smith chart constant VSWR circles







Hi Juan,

You can do it as a graphic but I found that the easiest way is to use a simple circuit added to the main schematic. See attached image if it doesn't get removed by this list.

Otherwise, If it does, using the Equation block ... set Zo, F_min, F_max and VSWR_value. 

Then add equations for   L_vswr = 1.5e8/(F_max - F_min)   and   R_vswr = VSWR_value*Zo

Then add to the schmatic:

   1) a Zo ohm transmission line of ... L = L_vswr, and;
   2) terminate it with a resistor of value ... R_vswr
   
F_min and F_max should be the range of your simulation.

Darrell ...

-----Original Message-----
From: j.l...@lm...
To: quc...@li...
Subject: [Qucs-help] Smith chart constant VSWR circles
Date: Fri, 11 Apr 2025 09:49:57 -0500

Is there an easy way to plot constant VSWR circles on a smith char in QUCS?

 

Juan 

 

 


_______________________________________________
Qucs-help mailing list
Quc...@li...
https://lists.sourceforge.net/lists/listinfo/qucs-help

_______________________________________________
Qucs-help mailing list
Quc...@li...
https://lists.sourceforge.net/lists/listinfo/qucs-help

Hi Juan,

You can do it as a graphic but I found that the easiest way is to use a
simple circuit added to the main schematic. See attached image if it
doesn't get removed by this list.

Otherwise, If it does, using the Equation block ... set Zo, F_min,
F_max and VSWR_value. 

Then add equations for   L_vswr = 1.5e8/(F_max - F_min)   and   R_vswr
= VSWR_value*Zo

Then add to the schmatic:

   1) a Zo ohm transmission line of ... L = L_vswr, and;
   2) terminate it with a resistor of value ... R_vswr
   
F_min and F_max should be the range of your simulation.

Darrell ...

-----Original Message-----
From: j.l...@lm...
To: quc...@li...
Subject: [Qucs-help] Smith chart constant VSWR circles
Date: Fri, 11 Apr 2025 09:49:57 -0500

Is there an easy way to plot constant VSWR circles on a smith char in
QUCS?

 

Juan 

 

 


_______________________________________________
Qucs-help mailing list
Quc...@li...
https://lists.sourceforge.net/lists/listinfo/qucs-help

Is there an easy way to plot constant VSWR circles on a smith char in QUCS?

 

Juan 

 

 

Thank you! I truly appreciate the effort.

Best

Joe

On 10/31/24 2:00 AM, Vadim Kuznetsov wrote:

> Hello,
>
> I have found and fixed a bug with ASCO. See https://github.com/ra3xdh/qucs_s/pull/1035 You have to build Qucs-S from Git or wait for the next release to get the fix. You don't need to build and install Qucsator separately.
>
> Regards,
> Vadim
>
> On 29.10.2024 19:34, Analog Joe wrote:
>
>> Hello,
>>
>> Thanks for replying. I built the old qucsator because I was desperate. I had the same error with the new qucsator_rf. Also, I had just installed the software, so it was a fresh install and I have that error coming up.
>>
>> Best
>>
>> Joe
>>
>> On 10/29/24 8:55 AM, Vadim Kuznetsov wrote:
>>
>>> Hello,
>>>
>>> I cannot reproduce this error. ASCO works on my machine as expected. As
>>> I can see from the logs, you are using old qucsator from legacy Qucs
>>> application. And you have build the qucsator yourself. The Qucs-S
>>> contains qucsator_rf simulation kernel as the part of package and you
>>> don't need to build it by hands. You have to specify the path (usually
>>> in /usr/bin/qucsator_rf) in the application settings if you have
>>> configure qucsator location before the v24.2.0. I didn't check the old
>>> qucsator operation for a while, so something may not work. Please make
>>> sure that you are running ASCO in Qucsator mode. SPICE mode is not
>>> supported.
>>>
>>> Regards,
>>> Vadim
>>>
>>> On 29.10.2024 09:39, Analog Joe via Qucs-help wrote:
>>>
>>>> Hi,
>>>>
>>>> I am using Qucs-S on Linux Mint. I am trying to run the ASCO optimizator, but I get this error and I have no idea where to look. I've tried every single suggestion offered online to no avail.
>>>>
>>>> This is the error message I am getting:
>>>>
>>>> Starting new simulation on Tue 29. Oct 2024 at 00:27:47:340
>>>>
>>>> creating netlist... done.
>>>>
>>>> Starting /home/joe/qucsator/src/.libs/asco
>>>>
>>>> ASCO-0.4.11 - Copyright (c) 1999-2022 Joao Ramos
>>>>
>>>> This program is distributed in the hope that it will be useful,
>>>>
>>>> but WITHOUT ANY WARRANTY; without even the implied warranty of
>>>>
>>>> MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
>>>>
>>>> GNU General Public License for more details.
>>>>
>>>> INFO: Qucs initialization on 'joe-Latitude-3400'
>>>>
>>>> INFO: Initialization has finished without errors on 'joe-Latitude-3400'
>>>>
>>>> INFO: Current directory on 'joe-Latitude-3400': /home/joe/.cache/qucs-s
>>>>
>>>> PRESS CTRL-C TO ABORT
>>>>
>>>> INFO: Starting global optimizer on 'joe-Latitude-3400'...
>>>>
>>>> auxfunc_measurefromlis.c - ProcessOutputFile -- Cannot open output file: joe-Latitude-3400.dat
>>>>
>>>> Errors occurred during simulation on Tue 29. Oct 2024 at 00:27:47:350
>>>>
>>>> Aborted.
>>>>
>>>> Thanks!
>>>> _______________________________________________
>>>> Qucs-help mailing list
>>>> Quc...@li...
>>>>
>>>> https://lists.sourceforge.net/lists/listinfo/qucs-help
>>>
>>> _______________________________________________
>>> Qucs-help mailing list
>>> Quc...@li...
>>>
>>> https://lists.sourceforge.net/lists/listinfo/qucs-help

Hello,

I have found and fixed a bug with ASCO. See 
https://github.com/ra3xdh/qucs_s/pull/1035 You have to build Qucs-S from 
Git or wait for the next release to get the fix. You don't need to build 
and install Qucsator separately.

Regards,
Vadim

On 29.10.2024 19:34, Analog Joe wrote:
>
> Hello,
>
> Thanks for replying. I built the old qucsator because I was desperate. 
> I had the same error with the new qucsator_rf. Also, I had just 
> installed the software, so it was a fresh install and I have that 
> error coming up.
>
> Best
>
> Joe
>
> On 10/29/24 8:55 AM, Vadim Kuznetsov wrote:
>> Hello,
>>
>> I cannot reproduce this error. ASCO works on my machine as expected. As
>> I can see from the logs, you are using old qucsator from legacy Qucs
>> application. And you have build the qucsator yourself. The Qucs-S
>> contains qucsator_rf simulation kernel as the part of package and you
>> don't need to build it by hands. You have to specify the path (usually
>> in /usr/bin/qucsator_rf) in the application settings if you have
>> configure qucsator location before the v24.2.0. I didn't check the old
>> qucsator operation for a while, so something may not work. Please make
>> sure that you are running ASCO in Qucsator mode. SPICE mode is not
>> supported.
>>
>> Regards,
>> Vadim
>>
>> On 29.10.2024 09:39, Analog Joe via Qucs-help wrote:
>>> Hi,
>>>
>>> I am using Qucs-S on Linux Mint. I am trying to run the ASCO optimizator, but I get this error and I have no idea where to look. I've tried every single suggestion offered online to no avail.
>>>
>>> This is the error message I am getting:
>>>
>>> Starting new simulation on Tue 29. Oct 2024 at 00:27:47:340
>>>
>>> creating netlist... done.
>>>
>>> Starting /home/joe/qucsator/src/.libs/asco
>>>
>>> ASCO-0.4.11 - Copyright (c) 1999-2022 Joao Ramos
>>>
>>> This program is distributed in the hope that it will be useful,
>>>
>>> but WITHOUT ANY WARRANTY; without even the implied warranty of
>>>
>>> MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
>>>
>>> GNU General Public License for more details.
>>>
>>> INFO: Qucs initialization on 'joe-Latitude-3400'
>>>
>>> INFO: Initialization has finished without errors on 'joe-Latitude-3400'
>>>
>>> INFO: Current directory on 'joe-Latitude-3400': /home/joe/.cache/qucs-s
>>>
>>> PRESS CTRL-C TO ABORT
>>>
>>> INFO: Starting global optimizer on 'joe-Latitude-3400'...
>>>
>>> auxfunc_measurefromlis.c - ProcessOutputFile -- Cannot open output file: joe-Latitude-3400.dat
>>>
>>> Errors occurred during simulation on Tue 29. Oct 2024 at 00:27:47:350
>>>
>>> Aborted.
>>>
>>> Thanks!
>>> _______________________________________________
>>> Qucs-help mailing list
>>> Quc...@li...
>>> https://lists.sourceforge.net/lists/listinfo/qucs-help
>> _______________________________________________
>> Qucs-help mailing list
>> Quc...@li...
>> https://lists.sourceforge.net/lists/listinfo/qucs-help

Hello,

I cannot reproduce this error. ASCO works on my machine as expected. As 
I can see from the logs, you are using old qucsator from legacy Qucs 
application. And you have build the qucsator yourself. The Qucs-S 
contains qucsator_rf simulation kernel as the part of package and you 
don't need to build it by hands. You have to specify the path (usually 
in /usr/bin/qucsator_rf) in the application settings if you have 
configure qucsator location before the v24.2.0. I didn't check the old 
qucsator operation for a while, so something may not work. Please make 
sure that you are running ASCO in Qucsator mode. SPICE mode is not 
supported.

Regards,
Vadim

On 29.10.2024 09:39, Analog Joe via Qucs-help wrote:
> Hi,
>
> I am using Qucs-S on Linux Mint. I am trying to run the ASCO optimizator, but I get this error and I have no idea where to look. I've tried every single suggestion offered online to no avail.
>
> This is the error message I am getting:
>
> Starting new simulation on Tue 29. Oct 2024 at 00:27:47:340
>
> creating netlist... done.
>
> Starting /home/joe/qucsator/src/.libs/asco
>
> ASCO-0.4.11 - Copyright (c) 1999-2022 Joao Ramos
>
> This program is distributed in the hope that it will be useful,
>
> but WITHOUT ANY WARRANTY; without even the implied warranty of
>
> MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
>
> GNU General Public License for more details.
>
> INFO: Qucs initialization on 'joe-Latitude-3400'
>
> INFO: Initialization has finished without errors on 'joe-Latitude-3400'
>
> INFO: Current directory on 'joe-Latitude-3400': /home/joe/.cache/qucs-s
>
> PRESS CTRL-C TO ABORT
>
> INFO: Starting global optimizer on 'joe-Latitude-3400'...
>
> auxfunc_measurefromlis.c - ProcessOutputFile -- Cannot open output file: joe-Latitude-3400.dat
>
> Errors occurred during simulation on Tue 29. Oct 2024 at 00:27:47:350
>
> Aborted.
>
> Thanks!
> _______________________________________________
> Qucs-help mailing list
> Quc...@li...
> https://lists.sourceforge.net/lists/listinfo/qucs-help

Hi,

I am using Qucs-S on Linux Mint. I am trying to run the ASCO optimizator, but I get this error and I have no idea where to look. I've tried every single suggestion offered online to no avail.

This is the error message I am getting:

Starting new simulation on Tue 29. Oct 2024 at 00:27:47:340

creating netlist... done.

Starting /home/joe/qucsator/src/.libs/asco

ASCO-0.4.11 - Copyright (c) 1999-2022 Joao Ramos

This program is distributed in the hope that it will be useful,

but WITHOUT ANY WARRANTY; without even the implied warranty of

MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

GNU General Public License for more details.

INFO: Qucs initialization on 'joe-Latitude-3400'

INFO: Initialization has finished without errors on 'joe-Latitude-3400'

INFO: Current directory on 'joe-Latitude-3400': /home/joe/.cache/qucs-s

PRESS CTRL-C TO ABORT

INFO: Starting global optimizer on 'joe-Latitude-3400'...

auxfunc_measurefromlis.c - ProcessOutputFile -- Cannot open output file: joe-Latitude-3400.dat

Errors occurred during simulation on Tue 29. Oct 2024 at 00:27:47:350

Aborted.

Thanks!

Vadim,

I think it would be a good addition to Qucs and Qucs-s that any standard 
dipole such as resistors, condensers and inductors (and probably 
transformers as well) admitted the possibility to enable calculating 
their voltage and current. I guess the the framework to do that already 
exists since independent sources by default provide current / voltage 
after simulation.

The true values of parameters used in simulation when they depend on an 
equation should also be optionally accessible.

Last: Why Qucs-S doesn't have phase modulator anymore?

Best regards,

Federico Miyara




On 5/10/2024 04:40, Vadim Kuznetsov wrote:
> Hello Federico,
>
> Both Qucs and Qucs-S don't support probes forwarding. The only way to 
> see the current inside subcircuit is to make current sensing ports and 
> attach the probe at the toplevel schematic.
>
> Regards,
> Vadim
>
> On 04.10.2024 09:16, Federico Miyara wrote:
>>
>> Dear all,
>>
>> I need to include probes in a subcircuit so that after a simulation 
>> of a larger circuit including the subcircuit the V and I values are 
>> available for subsequent use. But the corresponding values are just 
>> not available. Is there some way to do this?
>>
>> My usage case is as follows: I created a resistor with tolerance 
>> using random generators, and I would need to know the actual 
>> resistance used in each simulation. So far the only way is to add 
>> probes in the main circuit, but the probes happen to be too invasive, 
>> especially when there are several resistors. It would be nice to be 
>> able to hide the probes, but it isn't possible. That's why I 
>> attempted to include them within the subcircuit, seemingly to no avail.
>>
>> Thanks for any suggestion.
>>
>> Regards,
>>
>> Federico Miyara
>>
>
>
>
> _______________________________________________
> Qucs-help mailing list
> Quc...@li...
> https://lists.sourceforge.net/lists/listinfo/qucs-help


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Vadim,

Thank you for your reply. I think this would be a good addition. Another 
good addition would be to be able to edit the symbols of internal 
components, for instance to make them invisible, or to make the internal 
variables available. For instance, I've noticed that in the .dat results 
there are such variables as, e.g., _net3. These correspond to nodes that 
can be found by comparison, but are not offered among the results to be 
post-processed.

Best regards,

Federico Miyara

On 5/10/2024 04:40, Vadim Kuznetsov wrote:
> Hello Federico,
>
> Both Qucs and Qucs-S don't support probes forwarding. The only way to 
> see the current inside subcircuit is to make current sensing ports and 
> attach the probe at the toplevel schematic.
>
> Regards,
> Vadim
>
> On 04.10.2024 09:16, Federico Miyara wrote:
>>
>> Dear all,
>>
>> I need to include probes in a subcircuit so that after a simulation 
>> of a larger circuit including the subcircuit the V and I values are 
>> available for subsequent use. But the corresponding values are just 
>> not available. Is there some way to do this?
>>
>> My usage case is as follows: I created a resistor with tolerance 
>> using random generators, and I would need to know the actual 
>> resistance used in each simulation. So far the only way is to add 
>> probes in the main circuit, but the probes happen to be too invasive, 
>> especially when there are several resistors. It would be nice to be 
>> able to hide the probes, but it isn't possible. That's why I 
>> attempted to include them within the subcircuit, seemingly to no avail.
>>
>> Thanks for any suggestion.
>>
>> Regards,
>>
>> Federico Miyara
>>
>
>
>
> _______________________________________________
> Qucs-help mailing list
> Quc...@li...
> https://lists.sourceforge.net/lists/listinfo/qucs-help


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Hello Federico,

Both Qucs and Qucs-S don't support probes forwarding. The only way to 
see the current inside subcircuit is to make current sensing ports and 
attach the probe at the toplevel schematic.

Regards,
Vadim

On 04.10.2024 09:16, Federico Miyara wrote:
>
> Dear all,
>
> I need to include probes in a subcircuit so that after a simulation of 
> a larger circuit including the subcircuit the V and I values are 
> available for subsequent use. But the corresponding values are just 
> not available. Is there some way to do this?
>
> My usage case is as follows: I created a resistor with tolerance using 
> random generators, and I would need to know the actual resistance used 
> in each simulation. So far the only way is to add probes in the main 
> circuit, but the probes happen to be too invasive, especially when 
> there are several resistors. It would be nice to be able to hide the 
> probes, but it isn't possible. That's why I attempted to include them 
> within the subcircuit, seemingly to no avail.
>
> Thanks for any suggestion.
>
> Regards,
>
> Federico Miyara
>

Dear all,

I need to include probes in a subcircuit so that after a simulation of a 
larger circuit including the subcircuit the V and I values are available 
for subsequent use. But the corresponding values are just not available. 
Is there some way to do this?

My usage case is as follows: I created a resistor with tolerance using 
random generators, and I would need to know the actual resistance used 
in each simulation. So far the only way is to add probes in the main 
circuit, but the probes happen to be too invasive, especially when there 
are several resistors. It would be nice to be able to hide the probes, 
but it isn't possible. That's why I attempted to include them within the 
subcircuit, seemingly to no avail.

Thanks for any suggestion.

Regards,

Federico Miyara

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When trying to run  QucsatorRF standalone, after downloading from

https://github.com/ra3xdh/qucsator_rf/releases/tag/v1.0.1

and unzipping, an error arises because  libgcc_s_seh-1.dll is missing.

I noticed it does exist in the Qucs-S bin folder, probably that dll 
should be included in the standalone distribution of QucsatorRF

Regards,

Federico Miyara


On 23/7/2024 07:40, Vadim Kuznetsov wrote:
> Hello Qucs and Ngspice developers,
>
> I am glad to present a new Qucs-S v21.3.0 release. The packages and 
> installation instructions could be found at the release page: 
> https://github.com/ra3xdh/qucs_s/releases/tag/24.3.0
>
> This release contains a number of important improvements. Here are the 
> main features added in v24.3.0:
>
> * SpiceLibComp redesign. This device is renamed to /Spice Library 
> Device/ and provides an easy way
> to add SPICE model to schematic and assign symbol to it.
> * Added possibity to import SPICE model for Diode, BJT, MOSFET, and 
> JFET unified devices using special button in component properties
> * Implemented symbol files editing
> * Redesign of schematic rendering engine. Improve rendering quality on 
> HiDPI displays
> * Improved Qucsconv GUI to reflect new converter features
> * Fixed ASCO operation using QucsatorRF
> * QucsatorRF updated to version 1.0.1 This update mainly related to 
> file formats comverter See 
> https://github.com/ra3xdh/qucsator_rf/releases/tag/v1.0.1 for release 
> notes
> * Linux and WIndows binary packages switched to Qt6
> * Implemented MacOS installation support using homebrew
> * Introduced continuous releases
>
> The full changelog could be found at the release page: 
> https://github.com/ra3xdh/qucs_s/releases/tag/24.3.0 The Qucs-S 
> package is not related to the recent revival of the old Qucs development.
>
> Regards,
> Vadim Kuznetsov
> _______________________________________________
> Qucs-help mailing list
> Quc...@li...
> https://lists.sourceforge.net/lists/listinfo/qucs-help


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One question:

Is there any difference between Quqsator and QucsatorRF?

I mean, even accepting that in certain cases Ngspice will work better, 
is it possible to do all simulations that were possible using Qucs and 
Qucsator using Qucs-S and QucsatorRF instead?

Thank you.

Federico Miyara


On 23/7/2024 07:40, Vadim Kuznetsov wrote:
> Hello Qucs and Ngspice developers,
>
> I am glad to present a new Qucs-S v21.3.0 release. The packages and 
> installation instructions could be found at the release page: 
> https://github.com/ra3xdh/qucs_s/releases/tag/24.3.0
>
> This release contains a number of important improvements. Here are the 
> main features added in v24.3.0:
>
> * SpiceLibComp redesign. This device is renamed to /Spice Library 
> Device/ and provides an easy way
> to add SPICE model to schematic and assign symbol to it.
> * Added possibity to import SPICE model for Diode, BJT, MOSFET, and 
> JFET unified devices using special button in component properties
> * Implemented symbol files editing
> * Redesign of schematic rendering engine. Improve rendering quality on 
> HiDPI displays
> * Improved Qucsconv GUI to reflect new converter features
> * Fixed ASCO operation using QucsatorRF
> * QucsatorRF updated to version 1.0.1 This update mainly related to 
> file formats comverter See 
> https://github.com/ra3xdh/qucsator_rf/releases/tag/v1.0.1 for release 
> notes
> * Linux and WIndows binary packages switched to Qt6
> * Implemented MacOS installation support using homebrew
> * Introduced continuous releases
>
> The full changelog could be found at the release page: 
> https://github.com/ra3xdh/qucs_s/releases/tag/24.3.0 The Qucs-S 
> package is not related to the recent revival of the old Qucs development.
>
> Regards,
> Vadim Kuznetsov
> _______________________________________________
> Qucs-help mailing list
> Quc...@li...
> https://lists.sourceforge.net/lists/listinfo/qucs-help


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Hello Qucs and Ngspice developers,

I am glad to present a new Qucs-S v21.3.0 release. The packages and 
installation instructions could be found at the release page: 
https://github.com/ra3xdh/qucs_s/releases/tag/24.3.0

This release contains a number of important improvements. Here are the 
main features added in v24.3.0:

* SpiceLibComp redesign. This device is renamed to /Spice Library 
Device/ and provides an easy way
to add SPICE model to schematic and assign symbol to it.
* Added possibity to import SPICE model for Diode, BJT, MOSFET, and JFET 
unified devices using special button in component properties
* Implemented symbol files editing
* Redesign of schematic rendering engine. Improve rendering quality on 
HiDPI displays
* Improved Qucsconv GUI to reflect new converter features
* Fixed ASCO operation using QucsatorRF
* QucsatorRF updated to version 1.0.1 This update mainly related to file 
formats comverter See 
https://github.com/ra3xdh/qucsator_rf/releases/tag/v1.0.1 for release notes
* Linux and WIndows binary packages switched to Qt6
* Implemented MacOS installation support using homebrew
* Introduced continuous releases

The full changelog could be found at the release page: 
https://github.com/ra3xdh/qucs_s/releases/tag/24.3.0 The Qucs-S package 
is not related to the recent revival of the old Qucs development.

Regards,
Vadim Kuznetsov

Hello Ricardo,

Please upgrade your Qucs-S package to the latest version. You are trying 
to simulate the digital circuit using freeHDL. FreeHDL has been 
discontinued and deprecated everywhere. The latest release of Qucs-S has 
switched to GHDL. Alternatively you may install IcarusVerilog and 
specify Verilog in digital simulation settings. The iverilog works fine 
for digital devices.

Regards,
Vadim

On 26.03.24 04:49, Ricardo Emiro Ramirez Heredia wrote:
> Hi,
> I installed quc.s 2.1.0. I built some analog circuits and simulations are
> ok.
> But, I tried to simulate some digital circuits. Simulations don´t work and
> report the next:
> Progress
>
> Iniciando una nueva simulación en lun. 25. mar. 2024 en 20:34:26:827
>
>
> creando netlist... done.
>
> Starting D:\software\QUCS_S~2\QUCS_S~1\bin\QUCS_R~1.BAT
>
>
> running C++ conversion...
>
> compiling functions...
>
> compiling main...
>
> linking...
>
> simulating...
>
> running VCD conversion...
>
>
> Errors and warnings:
>
> "g++" is not recognized as an internal or external command, program or
> executable batch file.
>
> "g++" is not recognized as an internal or external command, program or
> executable batch file.
>
> "g++" is not recognized as an internal command or external, executable
> program or batch file.
> "digi.exe" is not recognized as an internal or external command, program or
> executable batch file.
>
>
> Thank you for your help to fix this problem.
>
>
> Best regards.
>
> RICARDO  RAMIREZ
>

Hi,
I installed quc.s 2.1.0. I built some analog circuits and simulations are
ok.
But, I tried to simulate some digital circuits. Simulations don´t work and
report the next:
Progress

Iniciando una nueva simulación en lun. 25. mar. 2024 en 20:34:26:827


creando netlist... done.

Starting D:\software\QUCS_S~2\QUCS_S~1\bin\QUCS_R~1.BAT


running C++ conversion...

compiling functions...

compiling main...

linking...

simulating...

running VCD conversion...


Errors and warnings:

"g++" is not recognized as an internal or external command, program or
executable batch file.

"g++" is not recognized as an internal or external command, program or
executable batch file.

"g++" is not recognized as an internal command or external, executable
program or batch file.
"digi.exe" is not recognized as an internal or external command, program or
executable batch file.


Thank you for your help to fix this problem.


Best regards.

RICARDO  RAMIREZ

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Have you tried to define a variable and then use it to extract a range?

vout = out.Vt

vout1 = vout[1:500]


I'm not sure that a field of a structure (I guess that's what out.Vt 
means) supports the same index handling syntax as a variable. In some 
languages such as Scilab it would work but in Qucs i don't know.

Regards,

Federico Miyara


On 06/11/2022 23:00, Tom Li via Qucs-help wrote:
> I'm trying to calculate some circuit parameters in Qucs using user-
> defined equations from the simulation results. The simulation is a
> 1001-point transient simulation, the output node is labelled as "out".
> After the simulation completes, the output voltage versus time is
> accessible as a vector out.Vt, and one can access the n-th element
> using the syntax out.Vt[n] in a user-defined equation. For example,
> out.Vt[500] is the 500th data point.
>
> Now I need to slice this vector, for example, to obtain the first
> 500 data points. But I don't know the correct syntax for this task.
> I've already read the documentation, including Short Description of
> Mathematical Functions, and Measurement Expressions Reference Manual.
> Unfortunately, none of these documents contain any helpful example.
>
> I've already tried out.Vt[1:500] and out.Vt[1,500]. But I got either
> an "Invalid" or "Wrong Dependency" error.
>
> What is the correct syntax for slicing a vector in Qucs?
>
> Thanks.
>
>
>
> _______________________________________________
> Qucs-help mailing list
> Quc...@li...
> https://lists.sourceforge.net/lists/listinfo/qucs-help
>



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