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Vacuum Tube SPICE Models
Vacuum Tube SPICE Models
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Old 17th July 2017, 09:05 AM   #1401
jazbo8 is offline jazbo8
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Vacuum Tube SPICE Models
Default EF14 SPICE Models

EF14 Triode-Connected SPICE Model (Ep=Eg2=Eg3):
Code:
*
* Generic triode model: EF14_T_AN
* Copyright 2003--2008 by Ayumi Nakabayashi, All rights reserved.
* Version 3.10, Generated on Mon Jul 17 18:59:47 2017
*                 Anode
*                 | Grid
*                 | | Cathode
*                 | | |
.SUBCKT EF14_T_AN A G K
BGG   GG   0 V=V(G,K)+0.25834978
BM1   M1   0 V=(0.019772316*(URAMP(V(A,K))+1e-10))**-0.8640245
BM2   M2   0 V=(0.63451119*(URAMP(V(GG)+URAMP(V(A,K))/18.484876)+1e-10))**2.3640245
BP    P    0 V=0.0039360935*(URAMP(V(GG)+URAMP(V(A,K))/29.132467)+1e-10)**1.5
BIK   IK   0 V=U(V(GG))*V(P)+(1-U(V(GG)))*0.0024438537*V(M1)*V(M2)
BIG   IG   0 V=0.0019680468*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)-(0.0021724414*URAMP(V(A,K))**1.5)))+1e-10*V(A,K)
BIGK  G    K I=V(IG)
* CAPS
CGA   G    A 0.01p
CGK   G    K 9.5p
CAK   A    K 8.2p
.ENDS
EF14 Pentode SPICE Model:
Code:
*
* Generic pentode model: EF14_AN
* Copyright 2003--2008 by Ayumi Nakabayashi, All rights reserved.
* Version 3.10, Generated on Mon Jul 17 18:59:10 2017
*               Anode
*               | Screen Grid
*               | |  Control Grid
*               | |  |  Cathode
*               | |  |  |
.SUBCKT EF14_AN A G2 G1 K
BGG   GG   0 V=V(G1,K)+0.25834978
BM1   M1   0 V=(0.019772316*(URAMP(V(G2,K))+1e-10))**-0.8640245
BM2   M2   0 V=(0.63451119*(URAMP(V(GG)+URAMP(V(G2,K))/18.484876)))**2.3640245
BP    P    0 V=0.0039360935*(URAMP(V(GG)+URAMP(V(G2,K))/29.132467))**1.5
BIK   IK   0 V=U(V(GG))*V(P)+(1-U(V(GG)))*0.0024438537*V(M1)*V(M2)
BIG   IG   0 V=0.0019680468*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)*(0.926292072*(1-URAMP(V(A,K))/(URAMP(V(A,K))+10))**1.5+0.073707928)
BIK3  IK3  0 V=V(IK2)*(URAMP(V(A,K))+1945)/(URAMP(V(G2,K))+1945)
BIK4  IK4  0 V=V(IK3)-URAMP(V(IK3)-(0.0021724414*(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)-(0.0021724414*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  0.01p
CGK   G1  K  5.7p
C12   G1  G2 3.8p
CAK   A   K  8.2p
.ENDS
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Old 18th July 2017, 08:11 AM   #1402
hsj21 is offline hsj21
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Quote:
Originally Posted by sleiven View Post
This work fine with LT spice
* LTSpice model
* Modified Koren model (8 parameters): mean fit error 0.26mA
* Traced by erik 25/12/2013 using Curve Captor v0.9.1
* from datasheet tracer
*
* 6gu7k8 LTSpice model
.subckt 6gu7k8 P G K
Bp P K I=(0.06497587648m)*uramp(V(P,K)*ln(1.0+(-0.05252127973)+exp((2.222713943)+(2.222713943)*((2 1.9586484)+(-218.6907395m)*V(G,K))*V(G,K)/sqrt((50.15327587)**2+(V(P,K)-(27.02078276))**2)))/(2.222713943))**(1.270480055)
Cgk G K 3.6p ; 0.2p added
Cpk P K 4p ; 0.5p added
Cgp G P 3.5p ; 0.5p added
Rpk P K 1G ; to avoid floating nodes
d3 G K dx1
.model dx1 d(is=1n rs=2k cjo=1pf N=1.5 tt=1n)
.ends

Click the image to open in full size.
Hi, this software is very good. Can you share this software?,
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Old 18th July 2017, 08:47 AM   #1403
jazbo8 is offline jazbo8
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Vacuum Tube SPICE Models
See curve captor free download - SourceForge
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Old 18th July 2017, 12:34 PM   #1404
Koonw is offline Koonw
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Vacuum Tube SPICE Models
Quote:
Originally Posted by hsj21 View Post
Hi, this software is very good. Can you share this software?,
Here you can find the Windows compilation, upon unzip run "curvecaptor.tcl" from CMD or file manager, it runs but the image file open only partially not full image, any idea what's up?

Edit: I resize the curve screen shoot image to 800x600, it's fully display.

More info found here.

Last edited by Koonw; 18th July 2017 at 01:03 PM.
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Old 18th July 2017, 02:08 PM   #1405
Koonw is offline Koonw
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Vacuum Tube SPICE Models
Here you can find a triode connected curve for VF14, (similar to EF14). I just trace it with CurveCaptor and model generated and work in LTSpice.

* ef14-3 PSpice model
.subckt ef14-3 P G K
Gp P K VALUE={(0.07667528023m)*limit(V(P,K)*log(1.0+(0.01 432477678)+exp((2.400438702)+(2.400438702)*((27.36 298562)+(-3289.702555m)*V(G,K))*V(G,K)/V(P,K)))/(2.400438702),0.0,1.0e16)**(1.33452029)}
.ends ef14-3

Here the tutorial in social media.
Attached Images
File Type: png ef14_g3_anode triode-2 plot.png (470.4 KB, 101 views)

Last edited by Koonw; 18th July 2017 at 02:12 PM.
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Old 20th July 2017, 06:54 AM   #1406
pli is offline pli  United States
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Does any one have triode model for 3V4/3A4? I searched the thread but couldn't find it. Thanks.
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Old 20th July 2017, 11:59 AM   #1407
Koonw is offline Koonw
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Vacuum Tube SPICE Models
Quote:
Originally Posted by pli View Post
Does any one have triode model for 3V4/3A4? I searched the thread but couldn't find it. Thanks.
I painted this 3V4 Tung Sol, included screen current and triode Mu est 9. Attached is the pentode and triode connected plot. The inter electrode capacitance can be changed if necessary.

**** 3V4_TS ******************************************
* Created on 07/20/2017 17:52 using paint_kip.jar
* www.dmitrynizh.com/tubeparams_image.htm
* Plate Curves image file: 3v4-ts.png
* Data source link: <plate curves URL>
*----------------------------------------------------------------------------------
.SUBCKT 3V4_TS 1 2 3 4 ; P G K G2
+ PARAMS: CCG=3P CGP=1.4P CCP=1.9P RGI=2000
+ MU=9 KG1=2368.8 KP=69.1 KVB=11.9 KVC=1.85 VCT=0 EX=1.21 KG2=3092.8
* Vp_MAX=200 Ip_MAX=20 Vg_step=1.5 Vg_start=0 Vg_count=8
* Rp=1600 Vg_ac=23.5 P_max=2 Vg_qui=-23.4 Vp_qui=240 UL=0.43 EG2=90
* X_MIN=105 Y_MIN=90 X_SIZE=753 Y_SIZE=757 FSZ_X=1589 FSZ_Y=975 XYGrid=true
* showLoadLine=n showIp=y isDHP=n isPP=n isAsymPP=n isUL=n showDissipLimit=y
* showIg1=n gridLevel2=n isInputSnapped=n
* XYProjections=n harmonicPlot=y harmonics=y
*----------------------------------------------------------------------------------
RE1 7 0 1G ; DUMMY SO NODE 7 HAS 2 CONNECTIONS
E1 7 0 VALUE= ; E1 BREAKS UP LONG EQUATION FOR G1.
+{V(4,3)/KP*LOG(1+EXP((1/MU+(VCT+V(2,3))/V(4,3))*KP))}
G1 1 3 VALUE={(PWR(V(7),EX)+PWRS(V(7),EX))/KG1*ATAN(V(1,3)/KVB)}
* Alexander Gurskii screen current, see audioXpress 2/2011
RE2 8 3 1G ; Dummy
G2 8 3 VALUE={(PWR(V(7),EX)+PWRS(V(7),EX))/KG2*(KVC-ATAN(V(1,3)/KVB))}
E2 8 4 VALUE={0} ; Dummy
RCP 1 3 1G ; FOR CONVERGENCE
C1 2 3 {CCG} ; CATHODE-GRID 1
C2 1 2 {CGP} ; GRID 1-PLATE
C3 1 3 {CCP} ; CATHODE-PLATE
R1 2 5 {RGI} ; FOR GRID CURRENT
D3 5 3 DX ; FOR GRID CURRENT
.MODEL DX D(IS=1N RS=1 CJO=10PF TT=1N)
.ENDS
*$
Attached Images
File Type: png 3v4-ts paint plot.png (74.8 KB, 60 views)
File Type: png 3v4-ts paint.png (329.8 KB, 64 views)
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Old 20th July 2017, 12:37 PM   #1408
Koonw is offline Koonw
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Vacuum Tube SPICE Models
Oops, this is the correct triode plot (model has not changed).
Attached Images
File Type: png 3v4-ts paint plot-2.png (75.3 KB, 66 views)
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Old 20th July 2017, 02:11 PM   #1409
pli is offline pli  United States
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That is great. Thanks. I did a line stage with 3V4 in triode mode and it sounds pretty good. I am on travel so I don't have the exact numbers. If the memory served me correctly, I biased at Vp=80V, Vk=4.7V, plate current is around 9mA, which is very close to your plate curve showed. Excellent work!
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