**** 6FF12P_TRIODE1 ******************************************
* Created on 06/12/2016 11:08 using paint_kit.jar 2.9
* www.dmitrynizh.com/tubeparams_image.htm
* Plate Curves image file: 6FF12P-triode1.png
* Data source link:
*
* Traced and model developed by Ale Moglia valves@bartola.co.uk
* www.bartola.co.uk/valves
*
* 1. total input capacitance measured is 418pF @gain of 40.5dB (x106)
* 2. From data sheet Cgk=4.6pF.  Given Cin=Cgk+(mu+1)*Cag -> Cag = (Cin-Cgk)/(mu+1) = 3.86pF
*----------------------------------------------------------------------------------
.SUBCKT TRIODE_6F12P-1 1 2 3 ; Plate Grid Cathode
+ PARAMS: CCG=4.6P  CGP=3.86P CCP=0.26P RGI=2000
+ MU=100 KG1=165 KP=768 KVB=66 VCT=0.188 EX=1.44
* Vp_MAX=200 Ip_MAX=30 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=75 Y_MIN=51 X_SIZE=371 Y_SIZE=497 FSZ_X=1072 FSZ_Y=683 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
*$