**** PX4_EML ******************************************
* Jac van de Walle. 28-Jun-2024
* Image File: http://www.emissionlabs.com/datasheets/PX4-c.gif (DC heated Curves)
*----------------------------------------------------------------------------------
.SUBCKT TRIODE_PX4_EML 1 2 3 ; Plate Grid Cathode
+ PARAMS: CCG=3P  CGP=1.4P CCP=1.9P RGI=2000
+ MU=4.62 KG1=1245 KP=67 KVB=300 VCT=-3.33 EX=1.372 
* Vp_MAX=500 Ip_MAX=200 Vg_step=10 Vg_start=0 Vg_count=11
* Rp=3500 Vg_ac=50 P_max=15 Vg_qui=-50 Vp_qui=300
* X_MIN=25 Y_MIN=5 X_SIZE=486 Y_SIZE=392 FSZ_X=1210 FSZ_Y=600 XYGrid=false
* showLoadLine=y showIp=y isDHT=n isPP=n isAsymPP=n showDissipLimit=y 
* showIg1=n gridLevel2=n 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 
D3 5 3 DX ; POSITIVE GRID CURRENT 
R1 2 5 {RGI} ; POSITIVE GRID CURRENT 
.MODEL DX D(IS=1N RS=1 CJO=10PF TT=1N) 
.ENDS 
*$