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25 lines
1.1 KiB
Plaintext
25 lines
1.1 KiB
Plaintext
* 6K1J Variable-mu VHF Pentode Spice Model
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* Author: Zabb Csaba
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* Date: 6/11/2021
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* The following parameters are not modelled:
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* (1) Filament and filament warmup time
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* (2) Limiting values
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* This model is valid for the following tubes (within max. ratings):
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* RCA 956, VT-238, E2F
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.SUBCKT 6K1J A S G K
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+ PARAMS: MU=19.2 KG1=95744 KP=12.95 KVB=5.76 VCT=0.0575 EX=2.828 KG2=120960 KNEE=14.4 KVC=2.339
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+ KLAM=2.5E-8 KLAMG=7.8E-5 KNEE2=13.39 KNEX=11.1
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E1 1 0 VALUE={V(S,K)/KP*LOG(1+EXP((1/MU+(VCT+V(G,K)*V(3))/SQRT(KVB+V(S,K)*V(S,K)))*KP))}
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E3 3 0 VALUE={ATAN(V(G,K)/19+1)/2.7+0.5}
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E2 2 0 VALUE={(PWR(V(1),EX)+PWRS(V(1),EX))}
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G1 A K VALUE={IF(V(A,K)>0,0.831*V(2)/KG1*ATAN((V(A,K)+KNEX)/KNEE)*TANH(V(A,K)/KNEE2)*(1+KLAMG*V(A,K)),0)}
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E4 4 K VALUE={IF(V(A,K)>0,V(A,K),0)}
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G2 S K VALUE={0.822*V(2)/KG2*(KVC-ATAN((V(4,K)+KNEX)/KNEE)*TANH(V(4,K)/KNEE2))/(1+KLAMG*V(4,K))}
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B1 G K I=URAMP(V(G,K)+1.15)^1.5*2.6E-4*V(5)
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E5 5 0 VALUE={IF(V(S,K)>0,1/(1+ABS(V(S,K))/20)^1.3,1)} ;G1 Splash current change
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R1 5 0 1G
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C1 G K 3.4p
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C2 A K 3p
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C3 G A 0.007p
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.ENDS
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*$ |