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.
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.I don't see one.
http://www.diyaudio.com/forums/tubes-valves/243950-vacuum-tube-spice-models.html#post3662623
I don't know if that's the most recent version, but E182CC is in there.
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Thanks, but this model does not work, or at least I can't get it to work.
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
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?
And does this indicate that all other peaks (f2, f3, etc) are similarly off?
Attachments
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.
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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
Yes... Included in a zip file I posted a few months ago in this thread.Now the LTSpice model of E182CC would be needed.
Does anybody have ?
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
The origin of this subject is that I have claimed that an ECC83 as a common cathode stage is capable of "drive" triode connected EL34 SE.
My earlier LTSpice simulations show that this is fully OK, but quite common opinion is that it is not.
Maybe I have to take the soldering iron...
My earlier LTSpice simulations show that this is fully OK, but quite common opinion is that it is not.
Maybe I have to take the soldering iron...
Optimising Spice model parameters
I was asked by Bondini to measure a few 5CZ5 pentodes on the uTracer which I duly did. I then extracted the Spice model using Derk Reedman's extractmodel for the beam pentode using DERKE. One set of triode connected curves and 4 sets of pentode curves for different values of Vs were used. The visual correlation between simulated and measured data looked pretty good.
I then built a simple Spice circuit that simulates what the uTracer does in UL mode, and measured the same on the uTracer. The comparison is shown in the attached file, with the solid blue lines being the Spice curves and the other coloured curves being the measured ones.
You can see some deviation in the area of interest, which is probably due to the inclusion of too many low current data points in the optimisation.
Any views on this?
I was asked by Bondini to measure a few 5CZ5 pentodes on the uTracer which I duly did. I then extracted the Spice model using Derk Reedman's extractmodel for the beam pentode using DERKE. One set of triode connected curves and 4 sets of pentode curves for different values of Vs were used. The visual correlation between simulated and measured data looked pretty good.
I then built a simple Spice circuit that simulates what the uTracer does in UL mode, and measured the same on the uTracer. The comparison is shown in the attached file, with the solid blue lines being the Spice curves and the other coloured curves being the measured ones.
You can see some deviation in the area of interest, which is probably due to the inclusion of too many low current data points in the optimisation.
Any views on this?
Attachments
I searched this thread for a model on the 50EH5 and had no luck. If someone out there has one or can make one that would be bananas.
http://frank.pocnet.net/sheets/093/5/50EH5.pdf
http://frank.pocnet.net/sheets/093/5/50EH5.pdf
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