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Rydel's triode model coefficients
Rydel's triode model coefficients
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Old 8th March 2013, 05:16 PM   #1
John Branson is offline John Branson
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Join Date: Mar 2011
Default Rydel's triode model coefficients

Has anyone found a way of obtaining the 4 coefficients required by the Rydel model of the triode tube? I have tried various non linear regression tools, all of which failed. I wrote my own version of the LMA algorithm, attempting to deal with the discontinuity in the anode characteristic, but the result is unsatisfactory for practical data entry which is subject to random reading errors. I would welcome an opportunity to compare notes with a fellow enthusiast.
My current interest is the 6336A twin power triode.
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Old 3rd May 2014, 08:25 PM   #2
mafalda is offline mafalda  France
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Default 6336


I used Mathcad to obtain the coefficients. It works pretty well.
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Old 4th May 2014, 09:14 PM   #3
mafalda is offline mafalda  France
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Join Date: Apr 2010
<a href="Curve Captor | Free Science & Engineering software downloads at SourceForge.net" target="_blank">CurveCaptor</a> has builtin Rydel triode model among others, but why are you interested in the Rydel model in particular? Just curious...

Happy to know that curvecaptor has implemented my models ;-)

Charles Rydel
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