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Vacuum Tube SPICE Models
Vacuum Tube SPICE Models
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Old 8th November 2015, 05:22 PM   #1011
Ray Waters is offline Ray Waters  United States
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Originally Posted by dgta View Post
Greetings. I'm just getting up to speed on LTSpice. Loaded tubes per post #117 and they work fine. Unzipped the Ayumi files from the fist page of this thread. Do those go in the \lib\sym directory? Do I need to manually create corresponding .asy files for each of the Ayumi tubes and put them in the sym directory?
By default, LTspice will look in the working directory or \lib\sub, so I would put your subcircuit and library files there for starters. I personally keep my own models in a User folder under \lib\sub but do have to account for that in the .inc or .lib statement.

LTspice has built-in symbols for triodes and tetrodes that will work fine with the Ayumi models. You will find them in \lib\sym\Misc.
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Old 9th November 2015, 03:49 AM   #1012
dgta is offline dgta  United States
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Thanks Ray. I can't figure out why I need to use a .inc directive. When I followed the instructions in post #117, those tubes work without a .inc directive.
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Old 9th November 2015, 04:13 AM   #1013
Ray Waters is offline Ray Waters  United States
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Originally Posted by dgta View Post
Thanks Ray. I can't figure out why I need to use a .inc directive. When I followed the instructions in post #117, those tubes work without a .inc directive.
If you are using Kevin's tube symbols these already refer to models in his library so no .inc or .lib directive is needed. But rather than have a specific symbol for each tube type you can use the generic triode.asy and tetrode.asy symbols included with LTspice. These built-in symbols don't know which tube type you are using and will need an include or library directive to specify that.

If Kevin's files work for you then by all means stick with them while you get familiar with LTspice. But keep in mind if you want to use a tube not in that library you can use the built-in symbols and a third-party subcircuit model for that tube.
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Old 9th November 2015, 06:04 AM   #1014
dgta is offline dgta  United States
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Aha, that makes perfect sense. Thanks.
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Old 9th November 2015, 04:11 PM   #1015
dgta is offline dgta  United States
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I can't find a model for 6AC7. Does anyone have a good one? Thanks
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Old 9th November 2015, 04:27 PM   #1016
jazbo8 is offline jazbo8
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Vacuum Tube SPICE Models
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I can't find a model for 6AC7. Does anyone have a good one? Thanks
See this thread.
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Old 9th November 2015, 04:47 PM   #1017
dgta is offline dgta  United States
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I did. Apparently you attached it to your post #13 in that thread, but it doesn't load. Perhaps a link no longer valid? Can you re-post it there or provide a link? Thanks.
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Old 9th November 2015, 05:27 PM   #1018
jazbo8 is offline jazbo8
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I deleted it the Ayumi model because it was not good enough, try the one jackinnj generated.
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Old 10th November 2015, 03:40 PM   #1019
artosalo is online now artosalo  Finland
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Now the LTSpice model of E182CC would be needed.
Does anybody have ?
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Old 10th November 2015, 04:10 PM   #1020
rongon is offline rongon  United States
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Now the LTSpice model of E182CC would be needed.
Does anybody have ?
Vacuum Tube SPICE Models


I don't know if that's the most recent version, but E182CC is in there.

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