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13th November 2019, 12:24 PM  #2111  
diyAudio Member

Quote:
Code:
* model by Eugene V. Karpov * .SUBCKT 6S45PE 1 2 3 ; P G C (Triode) 23Oct2006 + PARAMS: MU= 53.57 EX= 1.957 KG1= 126.6 KP= 368.51 + KVB= 300.0 VCT= 0.00 RGI=1000 + CCG=11P CGP=5P CCP=1.9P E1 7 0 VALUE= +{V(1,3)/KP*LN(1+EXP(KP*(1/MU+(V(2,3)+VCT)/SQRT(KVB+V(1,3)*V(1,3)))))} RE1 7 0 1G G1 1 3 VALUE={(PWR(V(7),EX)+PWRS(V(7),EX))/KG1} RCP 1 3 1G ; TO AVOID FLOATING NODES IN MUFOLLOWER C1 2 3 {CCG} ; CATHODEGRID; C2 2 1 {CGP} ; GRIDPLATE; C3 1 3 {CCP} ; CATHODEPLATE; D3 5 3 DX ; FOR GRID CURRENT R1 2 5 {RGI} ; FOR GRID CURRENT .MODEL DX D(IS=1N RS=1 CJO=10PF TT=1N) .ENDS Code:
.subckt 6C45PE 1 2 3 ; plate grid cathode + params: mu=47.4501 ex=2.374193 kg1=268.615545 kp=485.735371 kvb=501.503636 rgi=300 + ccg=2.4p cgp=4p ccp=.7p e1 7 0 value= {v(1,3)/kp*log(1+exp(kp*(1/mu+v(2,3)/sqrt(kvb+v(1,3)*v(1,3)))))} re1 7 0 1g g1 1 3 value= {(pwr(v(7),ex)+pwrs(v(7),ex))/kg1} rcp 1 3 1g c1 2 3 {ccg} c2 1 2 {cgp} c3 1 3 {ccp} r1 2 5 {rgi} d3 5 3 dx .model dx d(is=1n rs=1 cjo=10pf tt=1n) .ends Code:
* ============================================================== * 6C45Pi PSpice model * Joel Tunnah * ============================================================== .subckt 6C45Pij P G K Gp P K VALUE= + {(0.005984658048m)*limit(V(P,K)*ln(1.0+(0.02028899001)+exp((7.114994862)+ + (7.114994862)*((56.68678595)+(336.3011671m)*V(G,K))*V(G,K)/sqrt((7.450118654e006)**2+ + (V(P,K)(10.58802286))**2)))/(7.114994862),0.0,1.0e16)**(1.976888442)} Cgp G P 4p Cgk G K 11p Cpk P K 1.9p 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 6C45Pij This is what I have for WE 437A (You'll need to change "^" to "**" for LTspice): Code:
* Copyright (C) 2001 Andrei Frolov <andrei@phys.ualberta.ca> * Distributed under the terms of GNU Public License. * 437A  IDH miniature hightransconductance Bp P K I=(m)*uramp(()*V(G,K)+V(P,K))^1.5 * From WE 437A datasheet  traced on 240302 by AF .subckt 437A P G K Cgp G P 3.8p Ci G K 11.1p Co P K 1.0p * ChildLangmuir law: mean fit error 3.16544 mA * Bp P K I=(0.08803578596m)*uramp((46.53586861)*V(G,K)+V(P,K))^1.5 * ChildLangmuir law with contact potential: mean fit error 3.13346 mA * Bp P K I=(0.08984194232m)*uramp((46.41042043)*V(G,K)+V(P,K)+(1.625595632))^1.5 * Rydel model (4 parameters): mean fit error 2.85294 mA * Bp P K I=((0.09961070341m)+(0.004497964639m)*V(G,K))*uramp((43.21809681)*V(G,K)+V(P,K)+(8.460821328))^1.5 * Rydel model (5 parameters): mean fit error 2.5059 mA * Bp P K I=((0.1072981442m)+(0.003810318087m)*V(G,K))*uramp((46.45918184)*V(G,K)+V(P,K)+(3.803361558))^1.5 * V(P,K)/(V(P,K)+(35.10094748)) * Koren model (4 parameters): mean fit error 2.82829 mA * Bp P K I=(0.06450876758m)*uramp(V(P,K)*ln(1.0+exp((11.92107695)+(11.92107695)*(46.58588321)*V(G,K)/V(P,K)))/(11.92107695))^(1.566457341) * Koren model (5 parameters): mean fit error 2.46529 mA * Bp P K I=(0.0391526539m)*uramp(V(P,K)*ln(1.0+exp((11.13445084)+(11.13445084)*(47.10181935)*V(G,K)/sqrt((2.879020671k)+V(P,K)^2)))/(11.13445084))^(1.667607418) * Modified Koren model (6 parameters): mean fit error 2.05999 mA * Bp P K I=(0.04248601694m)*uramp(V(P,K)*ln(1.0+(0.2031315389)+exp((6.39958427)+(6.39958427)*((43.26744987)+(942.0790694m)*V(G,K))*V(G,K)/V(P,K)))/(6.39958427))^(1.648729764) * Modified Koren model (8 parameters): mean fit error 2.03357 mA Bp P K I=(0.04441361464m)*uramp(V(P,K)*ln(1.0+(0.08216925584)+exp((6.905076822)+(6.905076822)*((41.36290447)+(1039.217009m)*V(G,K))*V(G,K)/sqrt((36.83706712)^2+(V(P,K)(10.98747878))^2)))/(6.905076822))^(1.639335869) .ends 437A 

13th November 2019, 12:31 PM  #2112 
diyAudio Member
Join Date: Apr 2006
Location: Holland

Thanks Ron, appreciated. They take some time to settle when used for the first time, a couple of hours should do it. I'll pick the model with the nearest g_{m}.
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jaap 
13th November 2019, 04:33 PM  #2113 
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Join Date: Feb 2010


13th November 2019, 09:34 PM  #2114 
diyAudio Member
Join Date: Apr 2006
Location: Holland

Yup, just replaced it with 1K. How about the graphic, the dark figure resembles an audiofile. Some sort of oscillation?
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jaap 
14th November 2019, 09:47 PM  #2115 
diyAudio Member
Join Date: Sep 2017

Hi guys. I'm trying to simulate a 6L6 single ended output stage. I've been told I should be able to get 12W out of it, but using the models here I can't get past 6W.
I'm using the 6L6.inc model from Ayumi, but also tried other 6Lx6's to no avail. Here's a screenshot of the test circuit. I simply increased the input voltage amplitude till I reached 6% THD at the output, and then measured the output power. Am I missing something obvious here, please? ETA: Sorry, B2 should have been 240V instead, but it doesn't make a difference in the simulation Last edited by dazzamps; 14th November 2019 at 10:02 PM. 
15th November 2019, 06:58 AM  #2116  
diyAudio Member
Join Date: Feb 2010

Quote:
Look at the tube data here: http://www.mif.pg.gda.pl/homepages/f...127/6/6L6G.pdf Your main problem is far too low plate voltage (293 V). In the datasheet 10.8 W is got with 350 V at plate (and 15 % THD), with 4k2 load impedance and fixed bias. 

15th November 2019, 12:01 PM  #2117  
diyAudio Member
Join Date: Sep 2017

Quote:


15th November 2019, 02:34 PM  #2118 
diyAudio Member
Join Date: Sep 2017


22nd November 2019, 10:52 AM  #2119 
diyAudio Member
Join Date: Feb 2010
Location: Rzeszow

Does anyone have tube 6AV5 plate curves curved in triode?

22nd November 2019, 11:41 AM  #2120  
diyAudio Member
Join Date: Oct 2018
Location: East Border of Switzerland

Quote:
does anybody speak Russian here? I struggle to find the internal capacitances of the 1sh29b in its data sheet. And translate.google just failes... http://www.elektronikinfo.de/techpic/strom/1j29b.gif thanks Adrian 

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