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Vacuum Tube SPICE Models
Vacuum Tube SPICE Models
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Old 13th February 2018, 01:34 PM   #1621
matejsirk is offline matejsirk  Slovenia
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Vacuum Tube SPICE Models
Hi I am looking for LTspice model for 6S46G-V.

Tube data on: 6С46Г-В, Tube 6С46Г-В; Rohre 6С46Г-В ID43226, Double Triode

Triode curves in attach file
Attached Images
File Type: jpg 6S46G.jpg (580.9 KB, 205 views)
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Old 13th February 2018, 02:40 PM   #1622
Koonw is offline Koonw
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Quote:
Originally Posted by matejsirk View Post
Hi I am looking for LTspice model for 6S46G-V.

Tube data on: 6С46Г-В, Tube 6С46Г-В; Rohre 6С46Г-В ID43226, Double Triode

Triode curves in attach file
Code:
* 6S46G-V LTSpice model
.subckt 6S46G-V  P G K
    Bp  P K  I=(0.2734720428m)*uramp(V(P,K)*ln(1.0+(-0.03670114995)+exp((1.195695849)+(1.195695849)*((13.41579021)+(-192.3170616m)*V(G,K))*V(G,K)/sqrt((22.0885471)**2+(V(P,K)-(4.392866787))**2)))/(1.195695849))**(1.454315615)
    CGK G K 6.5p
    CGP G P 2.2p
    CPK P K 7.5p
.ends 6S46G-V
Attached Images
File Type: png 6S46G-V triode plot.png (31.5 KB, 202 views)
File Type: png 6S46G-V triode plot-2.png (33.8 KB, 202 views)
Attached Files
File Type: txt 6S46G-V.inc.txt (343 Bytes, 10 views)

Last edited by Koonw; 13th February 2018 at 02:48 PM.
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Old 13th February 2018, 02:57 PM   #1623
matejsirk is offline matejsirk  Slovenia
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Vacuum Tube SPICE Models
THX.
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Old 1st March 2018, 08:46 AM   #1624
jerrylong is offline jerrylong  China
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I have some E80L tube and want to use it making a headphone amplifier
10.JPG

11.jpg

I tried to search the SPICE model of it in the forum, but did't find any
can someone help me to find the E80L SPICE model? thanks
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Old 1st March 2018, 09:39 AM   #1625
RajkoM is offline RajkoM  Bosnia and Herzegovina
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Try this:

Code:
**** E80L Lorentz data***
* Created on 10/30/2013 13:10 using paint_kit.jar Version 2.4.7 Oct 2013 
* Model Paint Tools: Trace Tube Parameters over Plate Curves, Interactively
* Plate Curves image file: e80l.jpg
* Data source link: 
*----------------------------------------------------------------------------------
.SUBCKT E80L_T 1 2 3 ; Plate Grid Cathode
+ PARAMS: CCG=11P  CGP=3.4P CCP=7.3P RGI=2000
+ MU=22.1 KG1=636.8 KP=146.2 KVB=20.6 VCT=0.385 EX=1.49 
* Vp_MAX=400 Ip_MAX=60 Vg_step=2 Vg_start=0 Vg_count=16
* Rp=4000 Vg_ac=55 P_max=8 Vg_qui=-48
* X_MIN=41 Y_MIN=21 X_SIZE=572 Y_SIZE=433 FSZ_X=1032 FSZ_Y=742 XYGrid=false
*----------------------------------------------------------------------------------
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 
*$
Code:
.SUBCKT E80L_P  1 4 2 3  ;  25.3.2010.
+ PARAMS: MU= 23.5  EX= 1.263  KG1= 563.0  KP=149.19   KG2= 1400
+ KVB= 16.1  VCT=  0.00 RGI=1k
+ CCG=11P  CPG1=0.1P CCP=7P
RE1  7 0  1G    
RE2  8 3  1G    
E1   7 0  VALUE=  ; E1 BREAKS UP LONG EQUATION FOR G1.
+{V(4,3)/KP*LOG(1+EXP((1/MU+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)}
G2   8 3  VALUE={(PWR(V(7),EX)+PWRS(V(7),EX))/KG2*(2.5708-ATAN(V(1,3)/KVB))}
E2   8 4  VALUE={0}
RCP  1 3  1G      ; FOR CONVERGENCE
C1   2 3  {CCG}   ; CATHODE-GRID 1
C2   1 2  {CPG1}  ; 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
jazbo,

These are triode curves for E80L. If you want make AN spice model.
Excellent tube, btw
Attached Images
File Type: jpg E80L_T.jpg (135.0 KB, 148 views)
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Old 1st March 2018, 10:07 AM   #1626
jerrylong is offline jerrylong  China
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Thanks a lot, it is really good
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Old 1st March 2018, 10:13 AM   #1627
RajkoM is offline RajkoM  Bosnia and Herzegovina
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YAW
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Old 1st March 2018, 01:44 PM   #1628
jerrylong is offline jerrylong  China
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perfect match, thank a lot
13.JPG
14.JPG
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Old 1st March 2018, 03:04 PM   #1629
RajkoM is offline RajkoM  Bosnia and Herzegovina
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Yes, I made those models for myself about 7-8 years ago.
You are welcome.

Last edited by RajkoM; 1st March 2018 at 03:23 PM.
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Old 7th March 2018, 06:00 PM   #1630
khutch04 is offline khutch04
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I don't know if I have posted in this thread before or not. I am a bass guitar player who has slowly been edging towards restoring an old tube amp or just designing one from scratch or somewhere in between. I guess I should also mention that I am an electrical engineer in my day job and while tubes were king when I was a boy (I am older than the common 9V "transistor" battery) my life's work has been spent working on solid state circuits. Except for a brief and peripheral stint with VFDs which are now being used to make low voltage audio tubes I hear. I've even done some IC design work with processes as small as 64nm and in that type of work you rely heavily on simulations with known good process models because mask sets are so expensive that it had better work 98% to spec on the first try!

So having played with tube models in LTSpice for some months now thanks to the fine information presented in this thread, I am nearing the point where I will be trying some ideas in actual hardware and the question naturally arises as to how accurate these tube models are in terms of predicting in advance the performance you can expect from a circuit. In most cases when I build an old Fender, etc, amp circuit in LTSpice using your models the results match reasonably well with what these old relics claimed to have been able to do.

Having searched this thread for answers and having found very little I am wondering if any of you who have modeled and then built up tube amps have any comments on the general accuracy of these models? Are there some things they are good at predicting and others they are poor at? Do designs require a lot of fiddling to optimize them after building what the models predicted will work? I assume this thread would have died out a long time ago if the models were completely useless! Not looking for guarantees, just comments on what your experience has been and what reasonable expectations are?

Thanks!
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