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Old 6th January 2017, 04:26 PM   #1291
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Try searching this thread, I think cogsncogs made one that's quite accurate - better than Ayumi's version.
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Old 8th January 2017, 04:47 PM   #1292
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Default 12AX7A/ECC83 model

Quote:
Originally Posted by ygg-it View Post
Hello, I've found several models of 12AX7/ECC83 over internet.

Which is the most reliable you ever found? Can you please post here the best?
Don't know about the "best", but it's close...
Code:
* ==============================================================
* 12AX7A-mz LTSpice model
* Rydel model (5 parameters): mean fit error 0.0364781mA
* Traced by Wayne Clay on 10/01/2006 using Curve Captor v0.9.1
* from Mazda Belvu data sheet
* ==============================================================
.subckt 12AX7A-mz  P G K
  Bp  P K  I=((0.001162961073m)+(0.0001179305949m)*V(G,K))*uramp
+ ((89.27317344)*V(G,K)+V(P,K)+(50.06656412))**1.5 * V(P,K)/(V(P,K)+(1.191219264))
  Cgk G K 2.3p ; 0.7p added (1.6p)
  Cgp G P 2.3p ; 0.7p added (1.6p)
  Cpk P K 0.53p ; 0.2p added (0.33p)
  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 12AX7A-mz
Attached Files
File Type: txt 12AX7A-mz.lib.txt (2.7 KB, 11 views)
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Old Yesterday, 12:26 PM   #1293
RajkoM is offline RajkoM  Bosnia and Herzegovina
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If someone needs triode curves of E83F, here are (page 477).
Great tube, btw.

http://pessina.mib.infn.it/WOLTE2014...%201956%20.pdf
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