Activity for Dow Drake
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Dow Drake posted a comment on discussion Open Discussion
Hi Tom -- That's OK, I'm using a Linux build, but thanks for the offer!
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I haven't been able to find a link for RC2 Windows binaries. I'm also unable to build from source on Windows due to this issue. The problem is that qt4 has been removed from the MSYS2 repo.
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Thanks for this suggestion. It may be a feature that many users would like. But other users might complain about the increased resources required to compute and store data they didn't ask for. Maybe if node labels had voltage and current checkbox properties in addition to their name property, with the voltage checked and the current unchecked by default, the current behavior could be preserved, and the user could have the option of storing either current, voltage or both in the dataset. I agree that...
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Ok -- I think I finally understand the issue! I think that when you add the tabular, you do it via drag and drop. After dropping it on the schematic, one might expect that the select tool (arrow) would automatically become active -- so clicking on the tabular would select it, displaying the corner handles, but this is not the current behavior. Instead, it is necessary first to click the select tool or press escape (which activates the select tool) to enter select mode. This behavior is not specific...
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Sorry -- maybe I wasn't clear. You should add the variables to the table and hit "OK" to fill the table as you have been doing, but then after the populated table appears on your schematic, hit Esc to go back to select mode. Then you should be able to click on the table to select it. The corners should appear and you should be able to move or expand it. Best, Dow
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Ok -- I think I finally understand the issue! I think that when you add the tabular, you do it via drag and drop. After dropping it on the schematic, one might expect that the select tool (arrow) would automatically become active -- so clicking on the tabular would select it, displaying the corner handles, but this is not the current behavior. Instead, it is necessary first to click the select tool or press escape (which activates the select tool) to enter select mode. This behavior is not specific...
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Thanks Ulrich! I just installed Qucs 0.0.20 from http://ppa.launchpad.net/qucs/qucs/ubuntu precise, and still can't reproduce this issue on it. I added the tabular, adding just one dataset value. Then re-opened it and added some more values. After saving, the red arrow showed, but I was able to resize right away. It could be OS-specific, I guess, but maybe you could post your .sch file - it should be in $HOME/.qucs/your-project. I'm attaching the one I used to test. Best, Dow
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It sounds like a bug in your version of Qucs. I can't reproduce it with my setup (Ubuntu 20.04, Qucs 0.0.20 built from current master). If you can let me know your OS and Qucs version, I can check to see if this is a known issue or if it should be reported. Best, Dow
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Hi - If you click on the Tabular to select it then drag the bottom right corner, you should be able to widen it as you like. Best, Dow
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Yes, you can use this ppa: https://ubuntuhandbook.org/index.php/2020/07/install-qt4-ubuntu-20-04/ . There shouldn't be any conflict, and you shouldn't have to modify any environment variables. Qucs should configure correctly as long as the other pre-requisites are installed. I know this is an old post, but maybe it can help someone... Best, Dow
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Maybe this could help: http://qucs.sourceforge.net/docs/Photovoltaic_Cell_Model_Miguel%20Pareja.pdf
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I don't know if this helps, but I didn't have any issues with Qt 4.87 installed when configuring qucs on Ubuntu 20.04. Maybe this link could help: https://unix.stackexchange.com/questions/563250/trying-to-find-qt4-libraries-on-centos7
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You can customize a diode by setting its properties; also you can use an equation-defined device EDD as in the attached schematic. You can find the generic EDD under Components > nonlinear components. Best, Dow
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It looks like this is is a known issue https://github.com/Qucs/qucs/issues/830 But if anyone has a workaround, I'd be happy to try it!
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Hi - I have Qucs 0.0.20 (master branch) built from source on Ubuntu 20.04. I tried to run a simple digital simulation (see attached). The netlist generated ok, but qucsdigi gave an error that it could not find freehdl-config. I first tried downloading the source from http://freehdl.seul.org/ but both version 0.0.7 and 0.0.6 failed to compile in gcc 9.3.0. I noticed there was a package available for freehdl-0.0.8-2.2ubuntu4, and I installed it with the shared libraries and dev headers, but when I...
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@onderee: I didn't understand what you meant by an "ideal diode". Maybe this thread will help: https://sourceforge.net/p/qucs/discussion/311050/thread/d2801dd6/?limit=25#1337
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Please post your schematic (.sch) file. Thanks!
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@onderee: Isn't the plot correct? It should be less than 8V due to the forward voltage drop of the diode, right? @MANOJ KC: Have a look at page 25 of http://qucs.sourceforge.net/docs/tutorial/getstarted.pdf. There is an example that shows how to do this using the PlotVs function in an equation.
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This should work: http://qucs.sourceforge.net/docs/technical/technical.pdf
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In Qucs, do you see a menu option File > Examples? On my system it opens the directory '/usr/local/share/qucs/examples' in a file browser. I have Qucs 0.0.20 built from source on Ubuntu.
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szb's solution works since units are optional. You could also change the units from "Ohms" to "Ohm" as in "50 Ohm". "Ohm" is a valid unit, but "Ohms" and "ohm" are not (see section A.1 of http://qucs.sourceforge.net/docs/technical/technical.pdf). The line number "line 3" in the error message refers to the line of "netlist.txt". This file is generated in of your qucs data directory (e.g. $HOME/.qucs if you built from source on linux) when you click 'simulate'. Very little error checking is performed...
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Hi - I had the same problem with Qucs 0.0.19 snap install on Ubuntu. I ended up building Qucs 0.0.20 from the github source (master branch). That fixed this issue for me. One thing to mention, though. If you uninstall the snap version, all your schematics and other data will be deleted, so you may want to back some things up first. Building from source installs the program in /usr/local and stores data in $HOME/.qucs by default so you don't have to worry about losing your work if you uninstall. Best,...
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Christoph, Thank you very much for taking the time to explain all this and pointing...
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Using Netgen 6.1-dev Ngsolve 6.1 We're seeing some significant differences (up to...
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Here are the code files and results
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Using Netgen 6.1-dev Ngsolve 6.1 We're seeing some significant differences (up to...
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Using Netgen 6.1-dev Ngsolve 6.1 We're seeing some significant differences (up to...
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Using Netgen 6.1-dev Ngsolve 6.1 We're seeing some significant differences (up to...
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Using Netgen 6.1-dev Ngsolve 6.1 We're seeing some significant differences (up to...
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Using Netgen 6.1-dev Ngsolve 6.1 We're seeing some significant differences (up to...
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We're seeing some significant differences (up to a factor of 10 or so) in the H1...
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Here are the supporting files
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We're seeing some significant differences (up to a factor of 10 or so) between the...
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