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12GN7/12HG7 Triode Curves?
12GN7/12HG7 Triode Curves?
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Old 9th February 2018, 06:29 PM   #1
audiowize is offline audiowize  United States
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Default 12GN7/12HG7 Triode Curves?

Does anybody have a set of these handy? Google shows that they have existed, but all of the links and images are broken/gone.
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Old 9th February 2018, 06:33 PM   #2
rayma is offline rayma  United States
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https://frank.pocnet.net/sheets/135/1/12GN7A.pdf
http://www.r-type.org/pdfs/12hg7.pdf
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Old 9th February 2018, 07:30 PM   #3
kodabmx is offline kodabmx  Canada
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Neither of those sheets have curves for TRIODE mode.
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Old 9th February 2018, 10:30 PM   #4
multi is offline multi  Australia
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High Gm driver pentodes
Not sure if this helps
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Old 10th February 2018, 12:18 AM   #5
audiowize is offline audiowize  United States
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No, I'm looking for triode curves (hoping not to have to draw them by hand).
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Old 10th February 2018, 02:27 AM   #6
Koonw is online now Koonw
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I just created this model using Paint tool. Please advise if any good so I can post to Spice model thread.

**** 12GN7A ******************************************
* Created on 02/10/2018 09:53 using paint_kip.jar
* Model Paint Tools: Trace Tube Parameters over Plate Curves, Interactively
* Plate Curves image file: 12gn7.png
* Data source link: <plate curves URL>
*----------------------------------------------------------------------------------
.SUBCKT 12GN7A 1 2 3 4 ; P G K G2
+ PARAMS: CCG=17.5P CGP=0.12P CCP=4P RGI=2000
+ MU=40 KG1=493.2 KP=406.7 KVB=31.6 KVC=2.1 VCT=0.233 EX=2.18 KG2=1081.9
* Vp_MAX=500 Ip_MAX=140 Vg_step=0.5 Vg_start=0 Vg_count=7
* Rp=1600 Vg_ac=23.5 P_max=11.5 Vg_qui=-23.4 Vp_qui=240 UL=0.43 EG2=150
* X_MIN=101 Y_MIN=60 X_SIZE=1054 Y_SIZE=740 FSZ_X=1942 FSZ_Y=1102 XYGrid=false
* showLoadLine=n showIp=y isDHP=n isPP=n isAsymPP=n isUL=n showDissipLimit=y
* showIg1=n gridLevel2=n isInputSnapped=n
* XYProjections=n harmonicPlot=y harmonics=y
*----------------------------------------------------------------------------------
RE1 7 0 1G ; DUMMY SO NODE 7 HAS 2 CONNECTIONS
E1 7 0 VALUE= ; E1 BREAKS UP LONG EQUATION FOR G1.
+{V(4,3)/KP*LOG(1+EXP((1/MU+(VCT+V(2,3))/V(4,3))*KP))}
G1 1 3 VALUE={(PWR(V(7),EX)+PWRS(V(7),EX))/KG1*ATAN(V(1,3)/KVB)}
* Alexander Gurskii screen current, see audioXpress 2/2011
RE2 8 3 1G ; Dummy
G2 8 3 VALUE={(PWR(V(7),EX)+PWRS(V(7),EX))/KG2*(KVC-ATAN(V(1,3)/KVB))}
E2 8 4 VALUE={0} ; Dummy
RCP 1 3 1G ; FOR CONVERGENCE
C1 2 3 {CCG} ; CATHODE-GRID 1
C2 1 2 {CGP} ; GRID 1-PLATE
C3 1 3 {CCP} ; CATHODE-PLATE
R1 2 5 {RGI} ; FOR GRID CURRENT
D3 5 3 DX ; FOR GRID CURRENT
.MODEL DX D(IS=1N RS=1 CJO=10PF TT=1N)
.ENDS
*$
Attached Images
File Type: png 12gn7 paint.png (325.6 KB, 181 views)
File Type: png 12gn7 triode plot.png (78.6 KB, 181 views)
Attached Files
File Type: txt 12GN7A.inc.txt (1.6 KB, 14 views)
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Old 10th February 2018, 06:51 PM   #7
Angelm is offline Angelm  Bulgaria
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Here you are:
Attached Images
File Type: jpg 12GH7.jpg (41.3 KB, 162 views)
File Type: jpg 12GH7_2.jpg (41.6 KB, 141 views)
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Old 11th February 2018, 11:02 AM   #8
Koonw is online now Koonw
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Found GE, RCA/Sylvania 12GN7 triode curves.
Attached Images
File Type: jpg GE_12GN7A_triode_curves.jpg (116.3 KB, 121 views)
File Type: jpg RCA_12GN7A_triode_curves.JPG (111.3 KB, 44 views)
File Type: png 12HG7.png (312.2 KB, 41 views)
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