The whole premise seems odd, so let's step back a bit and see what you and/or Juan are saying - are you basically suggesting that the transformers designed with "old" knowledge do not work well? And the new equations can help to address their shortcomings? But isn't it common knowledge that well designed old transformers are the ones most sought after? And many diy'ers lament that the OPTs "are not made like they used to...", no?
I do not claim to have discovered gunpowder, but, if you read, there are only a few equations, which still I have not seen anywhere else, which does not mean that them not exist from a long ago.
Isn't the presentation here a re-hash of other threads by Juan? If not, then perhaps I jump the gun a bit, your points are certainly valid rwt to new core material, special needs for SMPS designs, etc. But we are after all talking about designing/winding audio fequency transformers using well known materials, or are the cores/wires no longer available like the old days? Curious that's all...
Of course is a rehash, a big one.
If you have any criticism is welcome, if you find any error I will thank you, if you have some new equations to add, much better.
But if you're going to criticize my style, or my previous threads or my Tarzan-English, I'm lost.
But if you're going to criticize my style, or my previous threads or my Tarzan-English, I'm lost.
Ultimately, nobody is obliged to read which he doesn't want to read, in fact there are thousands more of threads to read.
No critism intended, just wondering what's really new - clearly I have not read all the posts, too lazy... My question is why can't we just use the existing equations/methodologies or just with Yves' program to design and wind the OPTs, i.e., why re-invent the wheel? Or am I missing out on something otherwise?
I want to add that my program DOES NOT GARANTEE any thing, it just applies equations (wich may be a bit different than popilin's one) and shows you some results.
YOU must analyze this results and apply adjustments (core size, induction, gap size, copper wire section, interleaving, inter layer and inter winding thickness and material, etc...) until YOU meet YOUR specifications.
Must I add that this almost always finishes with some "compromises" ?
Yves.
Post 65
www.dissident-audio.com/OPT_da/PST-and-OPT.tar.gz
IIRC, It only does PP and not SE transformers.
www.dissident-audio.com/OPT_da/PST-and-OPT.tar.gz
IIRC, It only does PP and not SE transformers.
Oh ok thanks. Sorry I have not read the entire thread. I would need software for SE transformers and chokes.
Design a transformer with such a tool is interesant, but keep in mind that all audio transformers are only and simply, transformers. A bunch of formulae governs the the transformer design.
The real critical point is the physical implementation. An excellent design (Made by software or paper and pencil) becomes a disaster if bad wiring techniques used and or bad wire and isolation characteristics and or bad core selection.
The last point is where I have no doubt, Juan is pointing in this thread. Be patient.
The real critical point is the physical implementation. An excellent design (Made by software or paper and pencil) becomes a disaster if bad wiring techniques used and or bad wire and isolation characteristics and or bad core selection.
The last point is where I have no doubt, Juan is pointing in this thread. Be patient.
Osvaldo,
I'm travelling to Buenos Aires in October. Let me know what valves you need and I can bring them with me
Cheers
Ale
Are there any really great SPICE models for audio transformers? I use Tina, and it does have a long list of parameters I can specify, but I don't have a clue about almost all of them. Does it appear that enough parameters are included in the Tina spice model of a transformer?
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