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Old 20th September 2021, 02:20 AM   #3101
Koonw is offline Koonw
diyAudio Member
 
Join Date: Apr 2013
Type 50 RCA model:


Code:
**** 50 ** Advanced Grid Current **********************************
* Created on 09/20/2021 10:04 using paint_kit.jar 3.1
* Model Paint Tools: Trace Tube Parameters over Plate Curves, Interactively
* Plate Curves image file: 50.png
* Data source link: 
*----------------------------------------------------------------------------------
.SUBCKT 50 1 2 3 ; Plate Grid Cathode
+ PARAMS: CCG=4.2P  CGP=7.1P CCP=3.4P 
+ MU=3.832 KG1=4456.66 KP=38.05 KVB=3355.76 VCT=-0.18 EX=1.324 
+ VGOFF=-0.6 IGA=0.001 IGB=0.3 IGC=8 IGEX=1.64 
* Vp_MAX=800 Ip_MAX=120 Vg_step=20 Vg_start=0 Vg_count=9
* Rp=4000 Vg_ac=55 P_max=40 Vg_qui=-48 Vp_qui=300
* X_MIN=10 Y_MIN=40 X_SIZE=830 Y_SIZE=619 FSZ_X=1296 FSZ_Y=736 XYGrid=true
* showLoadLine=n showIp=y isDHT=n isPP=n isAsymPP=n showDissipLimit=y 
* showIg1=y gridLevel2=y isInputSnapped=n  
* XYProjections=n harmonicPlot=n dissipPlot=n 
*----------------------------------------------------------------------------------
E1 7 0 VALUE={V(1,3)/KP*LOG(1+EXP(KP*(1/MU+(VCT+V(2,3))/SQRT(KVB+V(1,3)*V(1,3)))))} 
RE1 7 0 1G  ; TO AVOID FLOATING NODES
G1 1 3 VALUE={(PWR(V(7),EX)+PWRS(V(7),EX))/KG1} 
RCP 1 3 1G   ; TO AVOID FLOATING NODES
C1 2 3 {CCG} ; CATHODE-GRID 
C2 2 1 {CGP} ; GRID=PLATE 
C3 1 3 {CCP} ; CATHODE-PLATE 
RE2 2 0 1G 
EGC 8 0 VALUE={V(2,3)-VGOFF} ; POSITIVE GRID THRESHOLD
GG 2 3 VALUE={(IGA+IGB/(IGC+V(1,3)))*(MU/KG1)*(PWR(V(8),IGEX)+PWRS(V(8),IGEX))}
.ENDS 
*$

DHT model:


Code:
**** 50 ** Composite DHT with Advanced Grid Current **************
* Created on 09/20/2021 10:06 using paint_kit.jar 3.1
* Model Paint Tools: Trace Tube Parameters over Plate Curves, Interactively
* Plate Curves image file: 50.png
* Data source link: 
*----------------------------------------------------------------------------------
.SUBCKT DHT_50_A2 1 2 3 4 ; P G K1 K2
+ PARAMS: CCG=4.2P  CGP=7.1P CCP=3.4P RFIL=6
+ MU=3.832 KG1=4456.66 KP=38.05 KVB=3355.76 VCT=-0.18 EX=1.324 
+ VGOFF=-0.6 IGA=0.001 IGB=0.3 IGC=8 IGEX=1.64 
* Vp_MAX=800 Ip_MAX=120 Vg_step=20 Vg_start=0 Vg_count=9
* Rp=4000 Vg_ac=55 P_max=40 Vg_qui=-48 Vp_qui=300
* X_MIN=10 Y_MIN=40 X_SIZE=830 Y_SIZE=619 FSZ_X=1296 FSZ_Y=736 XYGrid=true
* showLoadLine=n showIp=y isDHT=y isPP=n isAsymPP=n showDissipLimit=y 
* showIg1=y gridLevel2=y isInputSnapped=n 
* XYProjections=n harmonicPlot=n dissipPlot=n 
*----------------------------------------------------------------------------------
RFIL_LEFT    3  31 {RFIL/4}
RFIL_RIGHT   4  41 {RFIL/4}
RFIL_MIDDLE1 31 34 {RFIL/4}
RFIL_MIDDLE2 34 41 {RFIL/4}
E11 32 0  VALUE={V(1,31)/KP*LOG(1+EXP(KP*(1/MU+V(2,31)/SQRT(KVB+V(1,31)*V(1,31)))))}
E12 42 0  VALUE={V(1,41)/KP*LOG(1+EXP(KP*(1/MU+V(2,41)/SQRT(KVB+V(1,41)*V(1,41)))))}
RE11 34 0 1G
G11 1 31 VALUE={(PWR(V(32),EX)+PWRS(V(32),EX))/(2*KG1)}
G12 1 41 VALUE={(PWR(V(42),EX)+PWRS(V(42),EX))/(2*KG1)}
RCP1 1 34 1G
C1 2 34 {CCG} ; CATHODE-GRID
C2 2 1 {CGP} ; GRID=PLATE
C3 1 34 {CCP} ; CATHODE-PLATE
RE2 2 0 1G
EGC1 81 0 VALUE={V(2,31)-VGOFF} ; POSITIVE GRID THRESHOLD
GG1 2 31 VALUE={0.5*(IGA+IGB/(IGC+V(1,31)))*(MU/KG1)*(PWR(V(81),IGEX)+PWRS(V(81),IGEX))}
EGC2 82 0 VALUE={V(2,41)-VGOFF} ; POSITIVE GRID THRESHOLD
GG2 2 41 VALUE={0.5*(IGA+IGB/(IGC+V(1,41)))*(MU/KG1)*(PWR(V(82),IGEX)+PWRS(V(82),IGEX))}
.ENDS 
*$
Attached Images
File Type: jpg 50 RCA paint.jpg (467.1 KB, 46 views)
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