**** 6F12P TRIODE2 pentode section triode strapped ******************************************
* Created on 06/12/2016 11:21 using paint_kit.jar 2.9 
* www.dmitrynizh.com/tubeparams_image.htm
* Plate Curves image file: 6F12P triode2.png
* Data source link: 
* PENTODE Section (triode strapped)
* Traced and model developed by Ale Moglia valves@bartola.co.uk
* www.bartola.co.uk/valves
*
* 1. total input capacitance measured is 605pF @gain of 39dB (x89.1)
* 2. From data sheet Cgk=6.6pF.  Given Cin=Cgk+(mu+1)*Cag -> Cag = (Cin-Cgk)/(mu+1)  =6.64pF
*
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.SUBCKT TRIODE_6F12P-2 1 2 3 ; Plate Grid Cathode
+ PARAMS: CCG=6.6P  CGP=6.64P CCP=1.9P RGI=2000
+ MU=86.9 KG1=120 KP=512 KVB=435 VCT=0.228 EX=1.2 
* Vp_MAX=200 Ip_MAX=40 Vg_step=0.2 Vg_start=0 Vg_count=10
* Rp=4000 Vg_ac=55 P_max=40 Vg_qui=-48 Vp_qui=300
* X_MIN=76 Y_MIN=50 X_SIZE=630 Y_SIZE=516 FSZ_X=1333 FSZ_Y=664 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
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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 
*$