Vacuum Tube Spice Models - Page 41 - diyAudio
Go Back   Home > Forums > Amplifiers > Tubes / Valves

Tubes / Valves All about our sweet vacuum tubes :) Threads about Musical Instrument Amps of all kinds should be in the Instruments & Amps forum

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 21st March 2014, 04:30 PM   #401
diyAudio Member
 
jazbo8's Avatar
 
Join Date: Jan 2011
Location: In Transient
Quote:
Originally Posted by Ray Waters View Post
Your model is for the ECC33. I didn't think this was equivalent to the ECC88 (6DJ8/6922).
Ooops, corrected above.
  Reply With Quote
Old 25th March 2014, 10:58 PM   #402
diyAudio Member
 
dirkwright's Avatar
 
Join Date: May 2011
Location: Virginia
Default WE437A?

A spice model compatible with Tina would be nice for this tube. Thanks.

I guess it's the same as the 6S45P?
Attached Files
File Type: pdf 437A.pdf (87.7 KB, 15 views)

Last edited by dirkwright; 25th March 2014 at 11:07 PM.
  Reply With Quote
Old 25th March 2014, 11:42 PM   #403
diyAudio Member
 
Join Date: May 2003
Location: USA
Very similar... 6C45 has slightly higher plate dissipation (7.8W), slightly higher gain (~52), but lower maximum plate voltage (150V).
  Reply With Quote
Old 25th March 2014, 11:46 PM   #404
diyAudio Member
 
dirkwright's Avatar
 
Join Date: May 2011
Location: Virginia
OK, thanks.

On another tube, I'm having real difficulty finding a tetrode model of a D3A. Can someone direct me to a link or something? thanks.
  Reply With Quote
Old 26th March 2014, 03:48 AM   #405
diyAudio Member
 
cogsncogs's Avatar
 
Join Date: Jul 2003
Location: Wayne, West Virginia
Quote:
Originally Posted by dirkwright View Post
OK, thanks.

On another tube, I'm having real difficulty finding a tetrode model of a D3A. Can someone direct me to a link or something? thanks.
I have these two.
Code:
*           Plate
*           | Screen Grid
*           | | Grid
*           | | | Cathode
*           | | | |
.SUBCKT D3a A S G K ; old model
Eat    at    0    VALUE={.636*ATAN(V(A,K)/20)}                    ; /# is sharpness of knee
Egsg    gsg    0    VALUE={LIMIT(V(S,K)/1+PWRS(V(G,K),1)/.0146+V(A,K)/80000,0,1E6)}    ; s,k/#=peak current  g,k/# is mu  a,k/# is plate res
Egss    gss    0    VALUE={LIMIT(V(S,K)/10000000000+PWRS(V(G,K),1.0)/.03+V(A,K)/80,0,1E6)}    ; separating gsg,gss allows cutoff to be different
Egs2    gs2    0    VALUE={PWRS(V(gsg),1.45)}
Egs3    gs3    0    VALUE={PWRS(V(gss),1.45)}
Ecath     cc        0     VALUE={V(gs2)*V(at)+V(gs3)*V(at)}
Ga         A         K         VALUE={5.4E-5*V(cc)}
Escrn    sc    0    VALUE={V(gs2)*(1.1-V(at))}
Gs         S         K    VALUE={5.0E-5*V(sc)*LIMIT(V(S,K),0,10)/10}
Gg    G    K    VALUE={PWR(LIMIT(V(G,K)+1,0,1E6),1.5)*(1.25-V(at))*450E-6}
Cg1    G    K    8.5p
Cak    A    K    6.5p
Cg1a    G    A    1.1p
.ENDS D3a
Code:
*                Plate
*                | Screen Grid
*                | | Grid
*                | | | Cathode
*                | | | |
.SUBCKT 7721/D3a A S G K
Ea Gi G value= {-.09} ; grid offset
Eat    at    0    VALUE={.636*ATAN(V(A,K)/15)}                    ; /# is sharpness of knee
Egsg    gsg    0    VALUE={LIMIT(V(S,K)/1+PWRS(V(G,K),1)/.014+V(A,K)/80000,0,1E6)}    ; s,k/#=peak current  g,k/# is mu  a,k/# is plate res mu was too low
Egss    gss    0    VALUE={LIMIT(V(S,K)/10000000000+PWRS(V(G,K),1.0)/.03+V(A,K)/80,0,1E6)}    ; separating gsg,gss allows cutoff to be different
Egs2    gs2    0    VALUE={PWRS(V(gsg),1.4)}
Egs3    gs3    0    VALUE={PWRS(V(gss),1.4)}
Ecath     cc        0     VALUE={V(gs2)*V(at)+V(gs3)*V(at)}
Ga         A         K   VALUE={limit(6.4E-5*V(cc),0,v(a,k)/1.2k)}  ; added knee limit 3-17-10 sb
Escrn    sc    0    VALUE={V(gs2)*(1.1-V(at))}
Gs         S         K    VALUE={limit(9.8E-5*V(sc)*LIMIT(V(S,K),0,10)/10,0,v(a,k)/800)} ; screen current was too low, added limit sb
Gg    G    K    VALUE={PWR(LIMIT(V(G,K)+1,0,1E6),1.5)*(1.25-V(at))*450E-6}
Cg1    G    K    9.5p
Cak    A    K    4.5p
Cg1a    G    A    0.04p
.ENDS D3a
YMMV
  Reply With Quote
Old 26th March 2014, 03:51 AM   #406
diyAudio Member
 
cogsncogs's Avatar
 
Join Date: Jul 2003
Location: Wayne, West Virginia
I got them from here:
Intactaudio
  Reply With Quote
Old 26th March 2014, 04:07 AM   #407
diyAudio Member
 
cogsncogs's Avatar
 
Join Date: Jul 2003
Location: Wayne, West Virginia
Quote:
Originally Posted by dirkwright View Post
A spice model compatible with Tina would be nice for this tube. Thanks.

I guess it's the same as the 6S45P?
From Andrei Frolov.
Code:
* 437A  -  IDH miniature high-transconductance triode
* Gp  P K  VALUE={(m)*limit(()*V(G,K)+V(P,K),0.0,1.0e16)^1.5}
* From WE 437A datasheet - traced on 24-03-02 by AF
.subckt 437A  P G K
    Cgp G P  3.8p
    Ci  G K  11.1p
    Co  P K  1.0p
* Modified Koren model (8 parameters): mean fit error 1.94219 mA
    Gp  P K  VALUE=
+ {(0.04402840226m)*limit(V(P,K)*log(1.0+(-0.3253203784)+exp((2.359465245)+
+ (2.359465245)*((38.12689842)+(-2617.293976m)*V(G,K))*V(G,K)/sqrt((54.35117386)^2+
+ (V(P,K)-(41.98740594))^2)))/(2.359465245),0.0,1.0e16)^(1.633336782)}
.ends 437A
  Reply With Quote
Old 26th March 2014, 12:49 PM   #408
diyAudio Member
 
dirkwright's Avatar
 
Join Date: May 2011
Location: Virginia
Quote:
Originally Posted by cogsncogs View Post
I have these two.

[/CODE]YMMV
Thanks a bunch! You guys are very helpful!
  Reply With Quote
Old 29th March 2014, 03:10 PM   #409
diyAudio Member
 
Join Date: Jul 2009
Send a message via ICQ to mastajax Send a message via MSN to mastajax
Quote:
Originally Posted by jackinnj View Post
Here are the params for the 832, Vg2=250:

All Data Points: MU=6.27 KP=44.84 EX=1.55 KVB=36.1 KG1=5476
For Vak>= 50: MU=6.86 KP=28.01 EX=1.55 KVB=24.7 KG1=4795
For Vak>=100: MU=6.90 KP=27.40 EX=1.55 KVB=38.1 KG1=4614

All of the above are dependent upon the number of points, where you choose to select them from, and how you describe the error term being minimized. This was a pretty quick rendering of the datasheet into Excel, so ymmv.
Hello, I am interested in tracing out a Chinese 832a tube amp into Multisim but I can't find any tube models in multisim... do you know where I can get the 832a and 6n2p or 12ax7 tube model? is there software I can get that will have all these already in the library?
  Reply With Quote
Old 2nd April 2014, 11:41 AM   #410
diyAudio Member
 
artosalo's Avatar
 
Join Date: Feb 2010
I would be interested in having 6p36s LTspice model.
This tube seems to differ from EL500/-504 a bit.
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Tube spice models nhuwar Tubes / Valves 45 25th November 2011 08:47 AM
Computer program for tube curves and Spice models Jim Tonne Tubes / Valves 9 21st November 2010 10:10 AM
Spice models stinius Solid State 0 18th November 2008 09:07 PM
Got my tube spice models, and tubed CD player page back on the air wa2ise Tubes / Valves 2 20th April 2008 11:07 PM


New To Site? Need Help?

All times are GMT. The time now is 07:08 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2