There is no difference. The shape of the current in the output transformer will always be a curve to compensate for the nonlinearity of the magnetic circuit material. As a result, the voltage on the secondary winding is important to us, and not the current in the primary. Yes, the resistance of the source should tend to zero in this case, and in this respect the tetrodes are more advantageous than the triodes because of the lower reduced load resistance that is added in parallel with the internal resistance of the tubes, as the deceased James Moir writes.
The author is not Russian at all, I think everyone has Google.
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With all due respect, you and/or your guru must take a course on classical electrodynamics.
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Yes, and the best course of electrodynamics, read at the forum in Argentina?
ABOUT THE AUTHOR
From the middle of the 30s, James Moir found his vital interest in electroacoustics and made her his professional career. Most of his active work, he worked in the British company British Thomson-Houston Company. Caught in it after World War II, J.M. Was engaged in the development of special equipment for cinematography, including multi-channel recording and playback. In the 60's and 70's in the magazine "db" led his own column dedicated to professional sound amplification. Participated in the development of standards SMPTE and AES. He died in 1988. At the age of 80 years.
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No, because he is dead, one of the creators was James Clerk Maxwell, about a century before...
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But marketer Partridge with its gap increasing linearity in steel is apparently an icon. Maxwell rolled over ...
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The most important for basic frequency response. For the more complete POWER response you still have to consider the skin effect and the effective AC resistance. Anyway that proves already part of what I was saying earlier....
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All transformer equations can be derived from Maxwell's equations.
And a gapped core increasing linearity is not a fantasy nor a marketing trick but a reality (also derived from Maxwell's equations) used for transformer manufacturers al over the world, not just Partridge, here is a Tamura
There are others more linear but I have not pictures... 😀
BTW, a SE OPT just does not works without a gap...
Attachments
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Apparently PP Tamura, Hashimoto and Tango that are collected with no gap at all anywhere, not used. All these transformers were relegated to the dustbin due to the nonlinearity in the Partridge. Or have not passed the acceptance on your oscilloscope. Look closely to your screen, it SE transformer and the magnetic core HI-B . 😀😀😀
What I can tell you that at exactly the same time, American engineers Gotham Audio apparently cool to laugh at the Partridge times to reduce distortion in the PP amplifier for cutting the master LP lacquer did the opposite. Namely, to use a one-piece toroidal core without any gaps, but already appeared in the mid - 50s HI-B.
http://www.technicalaudio.com/pdf/G...Audio_Developments_feedback_cutter_system.pdf
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Please translate/clarify.
Not my scope, just a picture borrowed from the web. 😀
And a gapped core increasing linearity is not a fantasy nor a marketing trick but a reality (also derived from Maxwell's equations) used for transformer manufacturers al over the world, not just Partridge, here is a Tamura
T
BTW, a SE OPT just does not works without a gap...
Tamura F-2013 is a push pull opt; not such a good example here 🙄
There are some SE opt's working without a gap 😉
Aren't we wandering a bit off topic guys in the meantime?? 😱😱
Tamura F-2013: SE 10KΩ/4Ω, 8Ω, 16Ω 20Hz ~ 50KHz 40W 100mA
https://www.tamura-ss.co.jp/jp/products/electronic_components/download/audio_trance/pdf/f2010.pdf
OK, please show me one.
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Apparently the marketer Рartridge was not able to hear through your amplifier with a transformer with a gap that records are cut LP perfectly and without any sort of gap in the magnetic circuit.
https://www.youtube.com/watch?v=6wmfyq2HD20
http://www.technicalaudio.com/pdf/G...Audio_Developments_feedback_cutter_system.pdf
https://www.youtube.com/watch?v=6wmfyq2HD20
http://www.technicalaudio.com/pdf/G...Audio_Developments_feedback_cutter_system.pdf
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It is SE; saw it in a list together with PP transformers 😱
About gapless SE opt: think of parafeed 🙂
In general, the use of Litz is a good idea, and the more it is cheaper than silver wire. The only thing is that if the transformer is small and the wire in the primary winding turns out to be thin, then it is better and cheaper to apply a conventional copper mono wire. Is there a Litz wire in a fabric braid such as silk or polyester?
There is another way, and it is not as expensive as the use of silver or Litz in windings - a radical way to reduce losses and distortions in all output transformers, even those made long ago, moreover, and even a way of reducing distortion in the tubes themselves, is the use of high-efficiency speakers like This is for example widely done in the 60-70s.
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What are you talking about?
I already demonstrated pictures of oscillograms of an amp that produces up to 120 KHz -3 dB on full power on nominal load, using cheap Edcor transformer. Is not it enough?
I already demonstrated pictures of oscillograms of an amp that produces up to 120 KHz -3 dB on full power on nominal load, using cheap Edcor transformer. Is not it enough?
In fact for a small transformer is not needed. You fill the space much easier in the optimal way. The problem is more for large transformers where the sectioning might be a bit more but not too much more for practical reasons.
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