Help LTspice triode

[bombofa]

Hi, this is my first post on the forum!!
I just downloaded the ltspice version for mac.
I try to simulate a simple circuit whit a ltspice triode.

When I run the simulator the error message appear:

unknown subcircuit called in : xu1 .... triode

What can I do to run the simulator?

View attachment 67023

really thank's!!

 

[ericgibbs]

hi,
Please post your LTS asc file.

Use Go Advanced and Manage Attachments
E.

 

[bombofa]

Ok, I try whit a basic opamp, that doesn't work and I used this method:

use spice directive whit browse and I choosed opamp.sub, so I had :

".inc opamp.sub"

finally it worked!
But I don't have a triode.sub in my sub folder!

Is this the problem?
If I have a triode.sub in my sub library, maybe the circuit could work...

Or not?

 

[ericgibbs]

hi,
This is my full set of valves for LTS, unzip and place the files in their respective LTS folders.

Lets know how it goes.

BYW: Use the asy and models in the zip, dont use your asy.

Note also in the lib are other valves.

E.

 

[bombofa]

Wow thak's!
Now I downloaded your zip, but where I can put the txt and asc files?
I put the dmtriodep.lib in my sub folder and .asy file in my "misc" folder..

 

[ericgibbs]

hi,
For testing you could keep them all in the same folder...

If you look at the directory/folder structure of LTS, you will see C:\Program Files\LTC\LTspiceIV\lib, from this you should be able to see where to move the different file types.

Attached is your LTSasc file..

E.

For your new_triodes.txt file you could place in the sub folder and when you use a valve from those listed in the text, you should place
.include new_triodes.text on the circuit.

You could try copying and pasting valve models from txt to the dmtriode.lib... you may have to edit the model.

 

[bombofa]

Thank you very much Eric, now I can work !
I put the file "new_triode" and "dmtriodep.lib" into the folder where I saved my xxx.asc, for example:
1. open lts and create new schematic
2. save it whit xxx.asc name in my folder xxx.asc
3. copy and paste dmtriodep.lib and new_triode file into my xxx.asc folder

That's the only way I can see your file, because I tried to put dmtriodep.lib into C:\Program Files\LTC\LTspiceIV\lib, but seems that the ltspice doesn't find it!!
If I copy the dmtriodep.lib in a folder where I save my project, I can find the symbol!

I would like to work whit a pentode (generic) also, but in your library there aren't any pentodes models, do you know where I can find some models and how to work whit them? I loked in duncan amp's website, and I found some mdels, but I don't know how to test it!
And last one question
If I have a specific model, like 12au7, but I need a tube whit different characteristic (different mu, anode current, ecc..) can I modify the 12au7 parameters to have a new one model?

 

[ericgibbs]

hi,
There are generic tetrodes in the F2/misc files, you could use [ I use the newxxxx] versions, also have you tried the new_tetrodes.txt, you may have to rearrange the pin outs to suit the valve model.

I will work on the pentodes later and post what I finish up with.

 

[ericgibbs]

hi,
I copied and renamed the txt files as pentode2.mod and tetrode2.mod files.

Placed them in the sub files and the folder where I was creating the asc files.

Some of the authors valves need some work!.

Small sample attached.

E.