**** SRS551 TRIODE ******************************************
* Created on 04/03/2016 19:56 using paint_kit.jar 2.9 
* www.dmitrynizh.com/tubeparams_image.htm
* Plate Curves image file: SRS551 triode.png
* Data source link: www.bartola.co.uk/valves 
*
* Traced and model developed by Ale Moglia valves@bartola.co.uk
*
*----------------------------------------------------------------------------------
.SUBCKT SRS551-T 1 2 3 ; Plate Grid Cathode
+ PARAMS: CCG=3P  CGP=1.4P CCP=1.9P RGI=2000
+ MU=21.6 KG1=240 KP=140 KVB=300 VCT=0.132 EX=1.4 
* Vp_MAX=350 Ip_MAX=200 Vg_step=2 Vg_start=0 Vg_count=8
* Rp=4000 Vg_ac=55 P_max=60 Vg_qui=-48 Vp_qui=300
* X_MIN=81 Y_MIN=52 X_SIZE=481 Y_SIZE=465 FSZ_X=1117 FSZ_Y=651 XYGrid=false
* showLoadLine=n showIp=y isDHT=n isPP=n isAsymPP=n showDissipLimit=y 
* showIg1=n gridLevel2=n isInputSnapped=n  
* XYProjections=n harmonicPlot=n harmonics=y
*----------------------------------------------------------------------------------
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 
*$