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Vacuum Tube SPICE Models
Vacuum Tube SPICE Models
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Old 10th November 2015, 03:43 PM   #1021
dgta is offline dgta  United States
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Quote:
Originally Posted by jazbo8 View Post
I deleted it the Ayumi model because it was not good enough, try the one jackinnj generated.
I don't see one. I see the graphs where he's done some work generating parameters, but I don't see an actual model posted and I'm not knowledgeable enough to put one together from that.
Jackinnj, if you read this, can you please post the model? Thanks.
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Old 10th November 2015, 04:53 PM   #1022
jazbo8 is offline jazbo8
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Vacuum Tube SPICE Models
Quote:
Originally Posted by dgta View Post
I don't see one.
Sorry, I could not help you since I don't use the Rydel model, perhaps you can PM Jack to get the model from him.
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Old 10th November 2015, 05:09 PM   #1023
artosalo is offline artosalo  Finland
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Quote:
Originally Posted by rongon View Post
Vacuum Tube SPICE Models


I don't know if that's the most recent version, but E182CC is in there.

--
Thanks, but this model does not work, or at least I can't get it to work.
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Old 10th November 2015, 05:37 PM   #1024
RajkoM is offline RajkoM  Bosnia and Herzegovina
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Quote:
Originally Posted by artosalo View Post
Thanks, but this model does not work, or at least I can't get it to work.


This Ayumi model works.
BTW, E182CC (Mullard or Philips) sounds much better in practice than the simulation shows, IMO


* Generic triode model: E182CC
* Copyright 2003--2008 by Ayumi Nakabayashi, All rights reserved.
* Version 3.10, Generated on Sat Mar 8 22:42:34 2008
* Plate
* | Grid
* | | Cathode
* | | |
.SUBCKT E182CC A G K
BGG GG 0 V=V(G,K)+0.56912497
BM1 M1 0 V=(0.020096637*(URAMP(V(A,K))+1e-10))**-0.83371956
BM2 M2 0 V=(0.64275075*(URAMP(V(GG)+URAMP(V(A,K))/17.776569)+1e-10))**2.3337196
BP P 0 V=0.0068220515*(URAMP(V(GG)+URAMP(V(A,K))/27.657018)+1e-10)**1.5
BIK IK 0 V=U(V(GG))*V(P)+(1-U(V(GG)))*0.0041807778*V(M1)*V(M2)
BIG IG 0 V=0.0034110257*URAMP(V(G,K))**1.5*(URAMP(V(G,K))/(URAMP(V(A,K))+URAMP(V(G,K)))*1.2+0.4)
BIAK A K I=URAMP(V(IK,IG)-URAMP(V(IK,IG)-(0.0037843497*URAMP(V(A,K))**1.5)))+1e-10*V(A,K)
BIGK G K I=V(IG)
* CAPS
CGA G A 4.1p
CGK G K 6p
CAK A K 1.1p
.ENDS
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Old 10th November 2015, 05:41 PM   #1025
artosalo is offline artosalo  Finland
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Thanks RajkoM. This works.
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Old 10th November 2015, 05:44 PM   #1026
dgta is offline dgta  United States
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Newbie question: Looking at an FFT plot, the fundamental (1khz in pic below) shows not as a sharp spike but sort of a wider shape with a peak at some +20dB. Is this just a LTspice inaccuracy, is it the result of less than optimal tube models, or ??? I get this behavior with a variety of tubes.

And does this indicate that all other peaks (f2, f3, etc) are similarly off?
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Old 10th November 2015, 05:50 PM   #1027
jazbo8 is offline jazbo8
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Vacuum Tube SPICE Models
It has nothing to do with the tube models, it seems the window function in LTSpice isn't set up properly, BTW, in the future, please post LTSpice related questions to this thread.

Last edited by jazbo8; 10th November 2015 at 06:14 PM.
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Old 10th November 2015, 06:09 PM   #1028
dgta is offline dgta  United States
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Thank you, I will. I posted here thinking there may be an issue with the models.
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Old 10th November 2015, 06:17 PM   #1029
Mooly is offline Mooly  United Kingdom
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Vacuum Tube SPICE Models
Quote:
Originally Posted by dgta View Post
Thank you, I will. I posted here thinking there may be an issue with the models.
Have a look at post #19 in the LT thread jazbo linked to
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Old 10th November 2015, 07:14 PM   #1030
cogsncogs is offline cogsncogs  United States
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Quote:
Originally Posted by artosalo View Post
Now the LTSpice model of E182CC would be needed.
Does anybody have ?
Yes... Included in a zip file I posted a few months ago in this thread.
Code:
* E182CC_LC LTSpice model 
* Modified Koren model (8 parameters): mean fit error 0.170981mA 
* Traced by Wayne Clay on 10/18/2013 using Curve Captor v0.9.1 
* from Philips data sheet low current (0-10mA) plate curves 
.subckt E182CC  P G K 
    Bp  P K  I=
+ (0.2203535708m)*uramp(V(P,K)*ln(1.0+(-0.1063849781)+exp((3.874792069)+
+ (3.874792069)*((27.50585286)+(-67.76184167m)*V(G,K))*V(G,K)/sqrt((10.80206098)**2+
+ (V(P,K)-(-7.968864547))**2)))/(3.874792069))**(1.172598079) 
  Cgk G K 4.7p ; 0.7p added 
  Cpk P K 1.6p ; 0.5p added 
  Cgp G P 1.8p ; 0.7p added 
  Rpk P K 1G ; to avoid floating nodes 
  d3  G K dx1 
.model dx1 d(is=1n rs=2k cjo=1pf N=1.5 tt=1n) 
.ends E182CC
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