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Vacuum Tube SPICE Models
Vacuum Tube SPICE Models
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Old 11th September 2018, 02:25 PM   #1741
jackinnj is offline jackinnj  United States
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Vacuum Tube SPICE Models
Adding another term, and examining the 0 to 6mA portion of the VI curve:
Attached Images
File Type: png 8056_TEO.png (7.0 KB, 207 views)
File Type: png 8056_Predicted_VI.png (47.1 KB, 210 views)
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Old 11th September 2018, 07:12 PM   #1742
jackinnj is offline jackinnj  United States
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Vacuum Tube SPICE Models
And when you look at it to 50V you get different params and a medium mu tube -- I don't think it's ideal for audio!
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File Type: png 8056_50V_Params.png (6.8 KB, 193 views)
File Type: png 8056_Predicted_50V.png (49.1 KB, 190 views)
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Old 13th September 2018, 09:17 PM   #1743
rongon is offline rongon  United States
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Location: Across the river from Rip's big old tree...
Vacuum Tube SPICE Models
I haven't been able to find a 6JC6 pentode model for LTspice. Is there one?

smoking_amp posted some 6JC6 triode curves he traced

(2 mA/div Vert., 50 V/div. Horiz., grid in -0.5 V steps):
https://www.diyaudio.com/forums/atta...s_20ma_50v-jpg

6JC6 data sheet:
https://frank.pocnet.net/sheets/049/6/6JC6.pdf

Is that enough info? (I hope so...)

I have a 6JC6 triode model I could post, if anybody's interested. I don't remember where I found it...
--
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Old 16th September 2018, 09:15 PM   #1744
danco.vim is offline danco.vim  Italy
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Default KT66 triode model

Hi there, is there any reliable ltspice model for the KT66 in triode mode ?
Thanks all in advance.

Danilo
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Old 16th September 2018, 11:24 PM   #1745
jazbo8 is offline jazbo8
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Vacuum Tube SPICE Models
See post 6.
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Old 26th September 2018, 07:50 AM   #1746
caglio is offline caglio
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Hi, anyone have the 2E22 spice model?
Thanks
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Old 28th September 2018, 07:07 PM   #1747
Sorento is offline Sorento  Europe
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I found spice model of 1П24Б russian submini tube but I also need 1Ж18Б and 1Ж24Б both pentode. Anybody can help ?
http://www.etd.su/short/202/1/1z18b.GIF
http://www.etd.su/short/202/1/1z24b.GIF
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Old 2nd October 2018, 08:00 AM   #1748
sulcorebutia is offline sulcorebutia  Hong Kong
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Default Looking for directly heated triode 5A6 Ltspice model

Dear All,

I have searched the forum in vain for 5A6 ltspice model. Is it possible to generate one based on the following data?

Datasheet with pentode loadlines, interelectrodes capacitance:
http://rtellason.com/tubedata/5A6.pdf
http://tubedata.jp/sheets/020/5/5A6.pdf

A Gentleman from Japan has made a triode strapped 5a6 loadlines:
5A6三結実測値からLTSPICEモデルの作成 ( オーディオ )

Any pentode or triode model are welcome.

Many thanks in advance.
Attached pictures are from the Japanese gentleman's website.
Attached Images
File Type: jpg img_2.jpg (98.5 KB, 79 views)
File Type: jpg img_3.jpg (341.4 KB, 19 views)
File Type: jpg img_4.jpg (333.8 KB, 17 views)
File Type: jpg img_5.jpg (279.4 KB, 16 views)

Last edited by sulcorebutia; 2nd October 2018 at 08:09 AM.
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Old 2nd October 2018, 08:52 AM   #1749
jazbo8 is offline jazbo8
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Vacuum Tube SPICE Models
Default 5A6 SPICE Models

Since the models are derived from a single traced sample, please do not expect high accuracy.

Triode-Connected Model
Code:
*
* Generic triode model: 5A6_T_AN
* Copyright 2003--2008 by Ayumi Nakabayashi, All rights reserved.
* Version 3.10, Generated on Tue Oct 02 10:49:05 2018
*                Anode
*                | Grid
*                | | Cathode
*                | | |
.SUBCKT 5A6_T_AN A G K
BGG   GG   0 V=V(G,K)+0.99998753
BM1   M1   0 V=(0.015698277*(URAMP(V(A,K))+1e-10))**-0.15008063
BM2   M2   0 V=(0.90904648*(URAMP(V(GG)+URAMP(V(A,K))/5.7938533)+1e-10))**1.6500806
BP    P    0 V=0.00061411819*(URAMP(V(GG)+URAMP(V(A,K))/6.3735501)+1e-10)**1.5
BIK   IK   0 V=U(V(GG))*V(P)+(1-U(V(GG)))*0.00043471673*V(M1)*V(M2)
BIG   IG   0 V=0.00030705909*URAMP(V(G,K))**1.5*(URAMP(V(G,K))/(URAMP(V(A,K))+URAMP(V(G,K)))*1.2+0.4)
BIAK  A    K I=URAMP(V(IK,IG)-URAMP(V(IK,IG)-(0.00045711939*URAMP(V(A,K))**1.5)))+1e-10*V(A,K)
BIGK  G    K I=V(IG)
* CAPS
CGA   G    A 0.15p
CGK   G    K 8.5p
CAK   A    K 5.8p
.ENDS
Pentode Model
Code:
*
* Generic pentode model: 5A6_AN
* Copyright 2003--2008 by Ayumi Nakabayashi, All rights reserved.
* Version 3.10, Generated on Tue Oct 02 10:49:25 2018
*              Anode
*              | Screen Grid
*              | |  Control Grid
*              | |  |  Cathode
*              | |  |  |
.SUBCKT 5A6_AN A G2 G1 K
BGG   GG   0 V=V(G1,K)+0.99998753
BM1   M1   0 V=(0.015698277*(URAMP(V(G2,K))+1e-10))**-0.15008063
BM2   M2   0 V=(0.90904648*(URAMP(V(GG)+URAMP(V(G2,K))/5.7938533)))**1.6500806
BP    P    0 V=0.00061411819*(URAMP(V(GG)+URAMP(V(G2,K))/6.3735501))**1.5
BIK   IK   0 V=U(V(GG))*V(P)+(1-U(V(GG)))*0.00043471673*V(M1)*V(M2)
BIG   IG   0 V=0.00030705909*URAMP(V(G1,K))**1.5*(URAMP(V(G1,K))/(URAMP(V(A,K))+URAMP(V(G1,K)))*1.2+0.4)
BIK2  IK2  0 V=V(IK,IG)*(1-0.4*(EXP(-URAMP(V(A,K))/URAMP(V(G2,K))*15)-EXP(-15)))
BIG2T IG2T 0 V=V(IK2)*(0.86457278*(1-URAMP(V(A,K))/(URAMP(V(A,K))+10))**1.5+0.13542722)
BIK3  IK3  0 V=V(IK2)*(URAMP(V(A,K))+5850)/(URAMP(V(G2,K))+5850)
BIK4  IK4  0 V=V(IK3)-URAMP(V(IK3)-(0.00045711939*(URAMP(V(A,K))+URAMP(URAMP(V(G2,K))-URAMP(V(A,K))))**1.5))
BIP   IP   0 V=URAMP(V(IK4,IG2T)-URAMP(V(IK4,IG2T)-(0.00045711939*URAMP(V(A,K))**1.5)))
BIAK  A    K I=V(IP)+1e-10*V(A,K)
BIG2  G2   K I=URAMP(V(IK4,IP))
BIGK  G1   K I=V(IG)
* CAPS
CGA   G1  A  0.15p
CGK   G1  K  5.1p
C12   G1  G2 3.4p
CAK   A   K  5.8p
.ENDS
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Old 3rd October 2018, 02:40 AM   #1750
sulcorebutia is offline sulcorebutia  Hong Kong
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Thank you Jazbo
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