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17th July 2017, 09:05 AM  #1401 
diyAudio Moderator

EF14 SPICE Models
EF14 TriodeConnected SPICE Model (Ep=Eg2=Eg3):
Code:
* * Generic triode model: EF14_T_AN * Copyright 20032008 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))+1e10))**0.8640245 BM2 M2 0 V=(0.63451119*(URAMP(V(GG)+URAMP(V(A,K))/18.484876)+1e10))**2.3640245 BP P 0 V=0.0039360935*(URAMP(V(GG)+URAMP(V(A,K))/29.132467)+1e10)**1.5 BIK IK 0 V=U(V(GG))*V(P)+(1U(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)))+1e10*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 Code:
* * Generic pentode model: EF14_AN * Copyright 20032008 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))+1e10))**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)+(1U(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)*(10.4*(EXP(URAMP(V(A,K))/URAMP(V(G2,K))*15)EXP(15))) BIG2T IG2T 0 V=V(IK2)*(0.926292072*(1URAMP(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)+1e10*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 
18th July 2017, 08:11 AM  #1402 
diyAudio Member
Join Date: Dec 2013

Quote:

18th July 2017, 08:47 AM  #1403 
diyAudio Moderator


18th July 2017, 12:34 PM  #1404 
diyAudio Member

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. 
18th July 2017, 02:08 PM  #1405 
diyAudio Member

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.
* ef143 PSpice model .subckt ef143 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 ef143 Here the tutorial in social media. Last edited by Koonw; 18th July 2017 at 02:12 PM. 
20th July 2017, 06:54 AM  #1406 
diyAudio Member
Join Date: Feb 2009

Does any one have triode model for 3V4/3A4? I searched the thread but couldn't find it. Thanks.

20th July 2017, 11:59 AM  #1407  
diyAudio Member

Quote:
**** 3V4_TS ****************************************** * Created on 07/20/2017 17:52 using paint_kip.jar * www.dmitrynizh.com/tubeparams_image.htm * Plate Curves image file: 3v4ts.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*(KVCATAN(V(1,3)/KVB))} E2 8 4 VALUE={0} ; Dummy RCP 1 3 1G ; FOR CONVERGENCE C1 2 3 {CCG} ; CATHODEGRID 1 C2 1 2 {CGP} ; GRID 1PLATE C3 1 3 {CCP} ; CATHODEPLATE 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 *$ 

20th July 2017, 12:37 PM  #1408 
diyAudio Member

Oops, this is the correct triode plot (model has not changed).

20th July 2017, 02:11 PM  #1409 
diyAudio Member
Join Date: Feb 2009

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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