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Vacuum Tube SPICE Models
Vacuum Tube SPICE Models
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Old 9th August 2019, 12:14 PM   #2061
disco is offline disco  Netherlands
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Location: Holland
Quote:
Originally Posted by kevinkr View Post
This has been the subterfuge I used successfully in LTSpiceIV, I unfortunately have to report that this doesn't work in the 64 bit version of LTSpice XVII that I am now using. You can still edit the standard.mos file, but even after restarting LTSpice it ignores the entries. The values listed (variable names) are not correct for the new version either, I think they've changed the model used.
I recently installed the 64 bit version of LTSpice XVII. After copying the AN models into the *document* directory I see jack. Is it wiser to stick to the old IV version or does a primer exsist for freshmen like myself?
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Old 9th September 2019, 10:20 PM   #2062
Windcrest77 is offline Windcrest77  United States
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Default Best model sets at this time in history? (noob)

This LT Spice thread is so very long and I noticed that some posts recommended using models from one source over another. Without having to read all 400+ posts here...

Can someone provide some links as to what are the "best" models to download at this time in history?

I have a tube tracer with the capability to output an exact model for a single specifically measured tube, but I still need a collection of good models based on the published factors so I dont have to measure dozens of tubes to create models. I will use my tracer to generate models accurate to a specific physical tube if/when I want ultra-accuracy as a sanity test.

I have a lot to learn with LT but I wanted to get the current recommended models loaded at the outset.
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Old 9th September 2019, 10:40 PM   #2063
Zung is offline Zung  Switzerland
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Quote:
Originally Posted by disco View Post
I recently installed the 64 bit version of LTSpice XVII. After copying the AN models into the *document* directory I see jack. Is it wiser to stick to the old IV version or does a primer exsist for freshmen like myself?
You can put your models wherever you please, just tell it to LTspice: Tools -> Control Panel -> Sym. & Lib. Search Paths. Note the plural: more than 1 location is permitted.
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Old 10th September 2019, 01:58 AM   #2064
kissabout2002 is offline kissabout2002  Italy
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Quote:
Originally Posted by Windcrest77 View Post
Can someone provide some links as to what are the "best" models to download at this time in history?
Here some https://www.diyaudio.com/forums/atta...mi_ltspice-zip

Just search Ayumi model, Koren Model and Rydel model in this thread....all the best
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Old 22nd September 2019, 06:08 PM   #2065
finisvox is offline finisvox  Italy
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Join Date: Apr 2007
Hi all,

I'm looking for the 100TH (Eimac) spice model. I have tried the Ayumi's model, but it does not work. I have also reviewed hundred pages on this site, without luck. If somebody can give me that model, I will be very grateful.

thanks !
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Old 23rd September 2019, 03:41 AM   #2066
Windcrest77 is offline Windcrest77  United States
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Quote:
Originally Posted by kissabout2002 View Post
Here some https://www.diyaudio.com/forums/atta...mi_ltspice-zip

Just search Ayumi model, Koren Model and Rydel model in this thread....all the best
Thanks!
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Old 23rd September 2019, 05:42 AM   #2067
finisvox is offline finisvox  Italy
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Thanks you, Windcrest77. I have that zip file, but there is not the 100th spice model. I have tried also the following one:
Code:
* SPICE tube models for TINA simulator generated by Ayumi's method.
* 100TH*2SK79*4E27(Triode Strapped)*6H3/6N3*6H6/6N6
* 6H30/6N30*6J4P (Russian 6AC7)*6J4PT (Triode Strapped)
* C3g*C3g (Triode Strapped)*E92CC*6688 (E180F)*6688 (Triode Strapped)
* 805*814*814(Triode Strapped)*GU50(Russia)/FU50(China) Triode Strapped 
* GU50/FU50 
* **************************************
* Generic triode model: 100TH
* Copyright 2003--2008 by Ayumi Nakabayashi, All rights reserved.
* Version 3.10, Generated on Fri Nov 26 13:06:10 2010
*             Plate
*             | Grid
*             | | Cathode
*             | | |
.SUBCKT 100TH A G K
.PARAM X1=-0.99906964 X2=0.0014094818 X3=-0.083738904
PARAM X4=0.94712581 X5=37.513209 X6=1.5837389
.PARAM X7=0.00034469629 X8=39.607419 X9=0.00027070609
.PARAM Y1=0.00017234814 Y2=0.00018548443
BK IK 0 V=U(V(G,K)+X1)*X7*URAMP(V(G,K)+X1+URAMP(V(A,K))/X8)^1.5+(1-U(V(G,K)+X1))*X9*(X2*URAMP(V(A,K)))^X3*(X4*URAMP(V(G,K)+X1+URAMP(V(A,K))/X5))^X
BA A K I=URAMP((Y2*URAMP(V(A,K))^1.5)-URAMP((Y2*URAMP(V(A,K))^1.5)-V(IK)+Y1*URAMP(V(G,K))^1.5*(URAMP(V(G,K))/(URAMP(V(A,K))+URAMP(V(G,K)))*1.2+.4)))+1E-10*V(A,K)
BG G K I=Y1*URAMP(V(G,K))^1.5*(URAMP(V(G,K))/(URAMP(V(A,K))+URAMP(V(G,K)))*1.2+.4)
* CAPS
CGA G A 2p
CGK G K 2.9p
CAK A K 0.3p
.ENDS
*
** Generic triode model: 2SK79
* Copyright 2003--2008 by Ayumi Nakabayashi, All rights reserved.
* Version 3.10, Generated on Sun Feb 28 23:48:12 2010
*               Plate
*               | Grid
*               | | Cathode
*               | | |
.SUBCKT 2SK79 A G K
.PARAM X1=0.10157886 X2=0.005502006 X3=-0.28096081
.PARAM X4=0.84224201 X5=28.672814 X6=1.7809608
.PARAM X7=0.019995035 X8=34.043439 X9=0.012489311
.PARAM Y1=0.0099975173 Y2=0.010884964
BK IK 0 V=U(V(G,K)+X1)*X7*URAMP(V(G,K)+X1+URAMP(V(A,K))/X8)^1.5+(1-U(V(G,K)+X1))*X9*(X2*URAMP(V(A,K)))^X3*(X4*URAMP(V(G,K)+X1+URAMP(V(A,K))/X5))^X6
BA A K I=URAMP((Y2*URAMP(V(A,K))^1.5)-URAMP((Y2*URAMP(V(A,K))^1.5)-V(IK)+Y1*URAMP(V(G,K))^1.5*(URAMP(V(G,K))/(URAMP(V(A,K))+URAMP(V(G,K)))*1.2+.4)))+1E-10*V(A,K)
BG G K I=Y1*URAMP(V(G,K))^1.5*(URAMP(V(G,K))/(URAMP(V(A,K))+URAMP(V(G,K)))*1.2+.4)
* CAPS
CGA G A 15p
CGK G K 16p
CAK A K 4p
.ENDS
I have added the missing dot (.PARAM) and also tried all the "X" values missing, from X1 to X9, but it does not work properly. Anyone that could have a working 100TH model ? (LTC)

Thanks again,
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Old 23rd September 2019, 07:30 AM   #2068
tikiroo is offline tikiroo  New Zealand
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Try this:
Code:
.SUBCKT 100TH A G K
.PARAM X1=-0.99906964 X2=0.0014094818 X3=-0.083738904
.PARAM X4=0.94712581 X5=37.513209 X6=1.5837389
.PARAM X7=0.00034469629 X8=39.607419 X9=0.00027070609
.PARAM Y1=0.00017234814 Y2=0.00018548443
BK IK 0 V=U(V(G,K)+X1)*X7*URAMP(V(G,K)+X1+URAMP(V(A,K))/X8)**1.5+(1-U(V(G,K)+X1))*X9*(X2*URAMP(V(A,K)))**X3*(X4*URAMP(V (G,K)+X1+URAMP(V(A,K))/X5))**X6
BA A K I=URAMP((Y2*URAMP(V(A,K))**1.5)-URAMP((Y2*URAMP(V(A,K))**1.5)-V(IK)+Y1*URAMP(V(G,K))**1.5*(URAMP(V(G,K))/(URAMP(V(A,K))+URAMP(V(G,K)))*1.2+.4)))+1E-10*V(A,K)
BG G K I=Y1*URAMP(V(G,K))**1.5*(URAMP(V(G,K))/(URAMP(V(A,K))+URAMP(V(G,K)))*1.2+.4)
* CAPS
CGA G A 2p
CGK G K 2.9p
CAK A K 0.3p
.ENDS
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Old 23rd September 2019, 09:48 AM   #2069
finisvox is offline finisvox  Italy
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Many thanks; tikiroo.

I have done a very first test, and your model seems to work properly... Soon, I will do the tests with the rest of my circuit.

Thanks again,
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Old 23rd September 2019, 11:05 AM   #2070
Zung is offline Zung  Switzerland
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Search and replace the ^ with ** and you're good to go.
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