|
Re: Uploading a tube amplifier netlist on Files section
It turns out you cannot set the file size of images . The board also supports databases which can include photos the size of which can be limited but I am not sure if that would be any use. Cheers Ian On Fri, 28 Feb 2025 at 10:05, Robert via <birmingham_spider=[email protected]> wrote: On 28/02/2025 09:49, Ian Bell via wrote: |
|
Re: Uploading a tube amplifier netlist on Files section
OK, it turns out that this feature is not turned on for regular users. It took a while to trawl through the admin user interface to find the right setting but I think it should now allow all members to upload files and create directories. We only have 1G of space in the files section so for the moment I have disabled uploading pictures. Let me know if you can now upload files. Cheers Ian On Fri, 28 Feb 2025 at 08:06, Carlo via <carlo.cianfarani=[email protected]> wrote:
|
|
Re: Uploading a tube amplifier netlist on Files section
开云体育On 28/02/2025 09:06, Carlo wrote:
Maybe the group owner(s) can comment, but it's possible this group is on the free tier, and the file upload feature is now disabled. Other groups you may be familiar, with pay a subscription. -- Regards, Tony |
|
Re: Uploading a tube amplifier netlist on Files section
On Thu, Feb 27, 2025 at 12:26 PM, Ian Bell wrote:
Click on Files. At the top left of the page that then appears should be a green box labeled New/Upload.That's the problem. At the top left on Files page there is not the New/Upload green box at all ! ?
? |
|
Re: Uploading a tube amplifier netlist on Files section
Click on Files. At the top left of the page that then appears should be a green box labeled New/Upload. Cheers Ian On Thu, 27 Feb 2025 at 11:41, Carlo via <carlo.cianfarani=[email protected]> wrote:
|
|
12AU7 tube amplifier simulation
Hello,
I'm using ngspice to simulate a tube amplifier based on 12AU7 triode. Attached you can find a zipped folder with the main .cir file and the referenced libraries.
?
Coming from LTspice, I can see there is some issue when running transient analysis using ngspice. Namely the Initial Transient solution (ITS) step from .tran 10n 10m analysis picks a DC operating point solution quite different than LTspice (the same as the .op analysis).
?
ITS/DC operating point looks a bit weird, indeed the amplifier's output signal V(out1) isn't good at all.
?
Can you help me in understanding why ? Thanks.
?
Carlo.
? |
|
Re: Uploading a tube amplifier netlist on Files section
On Thu, Feb 27, 2025 at 03:04 AM, Robert wrote:
Hopefully you'll be able to see the file I've attached.Ah yes, I can see it (a ground symbol image). ?
I'm using ngspice to run a netlist from LTspice. In order to upload the full/expanded netlist (including all .model and .subckt referenced) there is a way to export it from ngspice command line ?
?
Thanks.
? |
|
Re: Uploading a tube amplifier netlist on Files section
Normally I just use email to interact with the list, and then I can simply attach files to my email. However, for this message I've gone to the website. The only way I can see of adding a file is by creating a message, and then clicking on the paperclip icon on the toolbar. I've just done that, to see if it works. Hopefully you'll be able to see the file I've attached. |
|
Uploading a tube amplifier netlist on Files section
Hello,
I came from LTspice background and now I'm starting using ngspice to simulate some circuit.
?
I'd like to upload the netlist of a tube amplifier I'm working on. On Files section, however, I can't see the Upload button.
?
Can you help me ? Thanks.
? |
|
Re: .include vs .lib directives
On Thu, Feb 27, 2025 at 12:28 AM, Tony Casey wrote:
That would make .subckt models non-portable between different SPICE simulators.Of course, the solution is not modify the library itself (no .LIB <libname> .ENDL within it) but use "set ngbehavior=lt" command into .spiceinit configuration file for ngspice. ?
Carlo. |
|
Re: .include vs .lib directives
开云体育On 27/02/2025 08:38, Carlo wrote:
That would make .subckt models non-portable between different SPICE simulators. -- Regards,
Tony |
|
Re: .include vs .lib directives
On Wed, Feb 26, 2025 at 01:35 PM, Tony Casey wrote:
.subckt <name> 1 2 3From ngspice-44 manual section 2.10:
From above I believe the "markers" are .LIB and .ENDL statements within the library file itself. I'll do a test using them within a my library.
?
Carlo.
? |
|
Re: .include vs .lib directives
开云体育On 26/02/2025 20:22, Carlo wrote:
If the above is correct, what are the "markers" of sections within the library files ?.subckt <name> 1 2 3 .. .. .ends <name> The above. -- Regards,
Tony |
|
Re: .include vs .lib directives
开云体育Try opening a library file in a text editor
(but be careful with Notepad - it sometimes plays tricks) and
look through it. I think you will see plainly the section
markers. On 2025-02-26 19:22, Carlo wrote:
--
OOO - Own Opinions only If something is true: * as far as we know - it's science *for certain - it's mathematics *unquestionably - it's religion |
|
.include vs .lib directives
Hello guys,
I'd like to ask how ngspice, under the hood of Kicad, actually manages library files.?
?
From ngspice manual, there are two ways to include .models or .subckt, namely using .include vs .lib directive.
?
.include <filename> literally includes the content of <filename> where the directive is located (e.g. within a .cir netlist). It works, let's say, just like the #include pre-processing directive in C language.
?
.lib instead actually includes only parts from library referenced in the file where the .lib directive is. The manual says that. lib directive has the following format: .lib <filename> libname. The latter should be the name of a "section" within the <filename> library file.
?
If the above is correct, what are the "markers" of sections within the library files ?
?
Thanks.
? |
|
KiCad 9.0 and my 6-hour project video on Youtube
#tutorial
Hi all,
?
KiCad 9.0 is finally here, and to mark the occasion I have published a 6-hour (!!!) video on Youtube.?
?
In this video, I show the complete process of how I designed a 4-layer PCB with a variety of interesting components, like an ESP32 C3, USB C, battery controller, flash memory, etc.?
?
I used the release candidates of KiCad 9 during January, mostly RC1 and RC2.
?
My objective was to experience KiCad 9 in a realistic non-trivial project and get first-hand experience of the productivity gains that we can expect from the latest refinements in the UI and several new features (the zone manager is my favourite).
?
I hope you will enjoy this video.
?
It's a big one, and an experiment I wanted to do for a long time to determine if people on Youtube are interested in this kind of content.
?
?
I appreciate your feedback.
?
Enjoy!
?
Peter
?
-- Tech Explorations |
|
Re: pcb transferboard
Nice! ? Sent from Proton Mail Android -------- Original Message -------- On 20/01/2025 05:09, hanz YL3JD via groups.io wrote:
|
Ian Bell
Tony Casey
Carlo
John Woodgate
Peter Dalmaris
hanz YL3JD