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Audio and Video Talk
Valves / Vacuum Tubes
Preamp/phase inverter simulation in LTSpice
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<blockquote data-quote="Ufudu" data-source="post: 931080" data-attributes="member: 16901"><p>HOLD ON!! :flame:</p><p></p><p>No, you can't just edit the parameters. </p><p></p><p>I have just noticed that the line </p><p></p><p>G1 1 3 VALUE={(PWR(V(7,0),EX)+PWRS(V(7,0),EX))/KG1} </p><p></p><p>differs by a factor of 0.5 between the 2 netlists.</p><p></p><p>So, if you wish to use 'my' parameters, add a 0.5 as follows: </p><p></p><p>G1 1 3 VALUE=0.5*{(PWR(V(7,0),EX)+PWRS(V(7,0),EX))/KG1} </p><p></p><p>and all should be well!</p><p></p><p>In the meantime, I have generated two sets of transfer curves for the tubes, the top one being the "Ufudu" version and the bottom one the "El Sid" version. Notice the difference at lower Va with Vg = 0. Otherwise they are both withing the usual tolerances</p><p></p><p>Enjoy your simulation!</p><p></p><p><a href="https://postimages.org/" target="_blank"><img src="https://i.postimg.cc/4ywKQy59/JJ-ECC83-S-a-cir.png" alt="" class="fr-fic fr-dii fr-draggable " style="" /></a></p><p></p><p><a href="https://postimages.org/" target="_blank"><img src="https://i.postimg.cc/pVBnHcHL/JJ-ECC83-S-a-mod-cir.png" alt="" class="fr-fic fr-dii fr-draggable " style="" /></a></p></blockquote><p></p>
[QUOTE="Ufudu, post: 931080, member: 16901"] HOLD ON!! :flame: No, you can't just edit the parameters. I have just noticed that the line G1 1 3 VALUE={(PWR(V(7,0),EX)+PWRS(V(7,0),EX))/KG1} differs by a factor of 0.5 between the 2 netlists. So, if you wish to use 'my' parameters, add a 0.5 as follows: G1 1 3 VALUE=0.5*{(PWR(V(7,0),EX)+PWRS(V(7,0),EX))/KG1} and all should be well! In the meantime, I have generated two sets of transfer curves for the tubes, the top one being the "Ufudu" version and the bottom one the "El Sid" version. Notice the difference at lower Va with Vg = 0. Otherwise they are both withing the usual tolerances Enjoy your simulation! [url=https://postimages.org/][IMG]https://i.postimg.cc/4ywKQy59/JJ-ECC83-S-a-cir.png[/IMG][/url] [url=https://postimages.org/][IMG]https://i.postimg.cc/pVBnHcHL/JJ-ECC83-S-a-mod-cir.png[/IMG][/url] [/QUOTE]
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Audio and Video Talk
Valves / Vacuum Tubes
Preamp/phase inverter simulation in LTSpice
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