LtSpice - Russian tube models

[Svein_B]

I spent some time looking for Spice models for the the GU50.

I managed to find some Russian tube models here, including the GU50: audioportal.su/showthread.php?t=7020

I am however not able to get the models to work in LtSpice.
It seems the tetrode/pentode models have the electrodes in a different order than the LtSpice symbols from DuncanAmps, and I do not know how to fix this.

More strange; the triode models seem to have the pins in the right sequence, but they do not work either.

Svein

[Svein_B]

Update:

The triode model works.
Must have been a "hick-up" in LtSpice that showed wrong current, in the wrong direction through R2. Deleted and re-inserted resistors and it works.

For the pentode I have temporarily defined a new symbol with nodes in same order as the model.

Svein

[dave slagle]

how did you log on and download the files? I see there is a Tetrode 6E5P that I would love to have.

dave

[Svein_B]

I did not log on and download the files stored on the forum, but I did a little bit of Internet Archeology;

I tried to follow a link to to a page which was no longer existing, but archive.org had a copy.

With the added help of Google translate we get this page: Next-Tube. Design of vacuum tube audio amplifiers
Here we find the PSlib.zip file that I attached to in post#1.
There is also a file Tube_ORCAD.zip that has a larger library which also include the 6E5P

Svein

[revintage]

Hey,

I found the libraries a long time ago but gave up due to I couldn´t make them work.

Svein, could you link the *.asc and the *.asy for the reworked tetrode?

[Svein_B]

revintage:
To create a symbol to work with the models in tubes_IM.inc, just open the existing tetrode symbol and edit the pin number assignment so that
P G1 C G2 correspond to 1 2 3 4. Make it look a little different, and save it under a different name.

Attached is the symbol I used (tetrode-Ry.asy)

Svein

[dave slagle]

Thanks Svein!

Got the files and the triode models are fine. The only tetrod I tried was the 6E5P and I keep getting the error below. I tried reworking both the model and the symbol and keep getting this result. I'll try with the GU-50 to see I I can replicate your results.

dave

[Svein_B]

I found that the pages of Eugene Karpov that I linked to in post#4 are available and active at a new address, and in English language, so no need to use archive and translate.
Next-Tube. Design of vacuum tube audio amplifiers.

Lots of good stuff there.


Dave,
the error message you posted is typical if you use a triode symbol (3 pins) and a spice model value for tetrode (4 pins)

Svein.

[dave slagle]

Svein,

still no luck with the pentode.

Lars, have you made any progress? I'm reasonably sure it is a simple pin renumbering thing but I am still striking out.

dave

[revintage]

Hey dve,
Will have another go at it soon. 6J9P/E180F is the one I will try to get working...
The 6E5PT model we discussed at your forum is good enough. But the tetrode would be nice to have!