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Vacuum Tube SPICE Models
Vacuum Tube SPICE Models
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Old 13th July 2018, 08:22 AM   #1711
jazbo8 is offline jazbo8
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Join Date: Jan 2011
Location: In Transient
Vacuum Tube SPICE Models
Default 814 SPICE Model

Here is the LTspice version:

Code:
*
* Generic pentode model: 814_AN
* Copyright 2003--2008 by Ayumi Nakabayashi, All rights reserved.
* Version 3.10, Generated on Mon Apr 21 13:14:11 2014
*              Plate
*              | Screen Grid
*              | |  Control Grid
*              | |  |  Cathode
*              | |  |  |
.SUBCKT 814_AN A G2 G1 K
BGG   GG   0 V=V(G1,K)+0.99999999
BM1   M1   0 V=(0.049912267*(URAMP(V(G2,K))+1e-10))**-0.68443184
BM2   M2   0 V=(0.68667741*(URAMP(V(GG)+URAMP(V(G2,K))/6.2774666)))**2.1844318
BP    P    0 V=0.00055231093*(URAMP(V(GG)+URAMP(V(G2,K))/9.1417986))**1.5
BIK   IK   0 V=U(V(GG))*V(P)+(1-U(V(GG)))*0.00032281665*V(M1)*V(M2)
BIG   IG   0 V=0.00027615547*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)*(0.89602099*(1-URAMP(V(A,K))/(URAMP(V(A,K))+10))**1.5+0.10397901)
BIK3  IK3  0 V=V(IK2)*(URAMP(V(A,K))+30300)/(URAMP(V(G2,K))+30300)
BIK4  IK4  0 V=V(IK3)-URAMP(V(IK3)-(0.00036921433*(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)-(0.00036921433*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  8.4p
C12   G1  G2 5.6p
CAK   A   K  14p
.ENDS
For triode, just connect it as one in the schematic.
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Old 13th July 2018, 01:27 PM   #1712
matejsirk is offline matejsirk  Slovenia
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Join Date: Mar 2008
Vacuum Tube SPICE Models
Default RS1003 Pentode Spice model

Does anyone have a SPICE model for the RS1003 - Pentode?
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Old 19th July 2018, 12:16 PM   #1713
LAZAROIU is offline LAZAROIU  Romania
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Join Date: Nov 2008
Location: 135200
Quote:
Originally Posted by matejsirk View Post
Does anyone have a SPICE model for the RS1003 - Pentode?
Maybe this model is good, we made an SE with RS1003 and the actual measurements were ~ 95% like those in the simulation, try it!

*******************************
*RS1003 idem SRS551
*Vg2=400V
.SUBCKT RS1003 1 4 2 3 ; P G2 G1 K (PENTODE)
.PARAMS: MU= 23.412 EX= 1.315 KG1= 245 KP= 92.4 KG2= 2843 KVB= 80.7 CCG=23P CPG1=0.15P CCP=13P RGI=1K;

RE1 7 0 1G ; DUMMY SO NODE 7 HAS 2 CONNECTIONS
E1 7 0 VALUE={V(4,3)/KP*LOG(1+EXP((1/MU+V(2,3)/V(4,3))*KP))} ; E1 BREAKS UP LONG EQUATION FOR G1.
G1 1 3 VALUE={(PWR(V(7),EX)+PWRS(V(7),EX))/KG1*ATAN(V(1,3)/KVB)}
G2 4 3 VALUE={(EXP(EX*(LOG((V(4,3)/MU)+V(2,3)))))/KG2}
RCP 1 3 1G ; FOR CONVERGENCE
C1 2 3 {CCG} ; CATHODE-GRID 1
C2 1 2 {CPG1} ; 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
*******************************
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