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Old 7th December 2010, 08:20 PM   #1961
PMA is offline PMA  Europe
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The number of topologies is not infinite. We all design circuits that resemble another circuits already designed, more or less, intentionally or unconsciously. So do I, so does Joachim, so do others and Mr. Popa is no exception.

Go on, Joachim.
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Old 7th December 2010, 08:35 PM   #1962
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Joachim, although you are audio professional, you are also prime example of DIY spirit.
I love reading your posts.
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Old 7th December 2010, 08:42 PM   #1963
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Thanks Pavel. This was a heavy day on my heart. First i felt like an inovator and later it turned out that i am considered a copycat.
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Old 7th December 2010, 08:45 PM   #1964
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Thanks vuki. I seem to have more friends then i thought. Give me a little break but i may come back with fresh ideas.
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Old 7th December 2010, 09:15 PM   #1965
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IF SYN08 felt offended in any way he would certainly say so in very clear terms! Joachim, you quote Solomon; "nothing (totally) new under the sun" : and as PMA implies,virtually everything designed is in some respects a derivative of some thing else.

The skill is to improve and meet ever higher objectives - and in this success usually comes from examining the objective from every possible viewpoint and stubbornly persisting until what is required is achieved. You have succeeded in this area more than most professionals! AND most professionals do not give any freebie, fully thought out and tested top designs to DIY enthusiasts!

Keep up the good work!!!
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Old 7th December 2010, 09:36 PM   #1966
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Hi Brian ! I am really moved by the positive reaction i get. I need some time now to think but i will continue when something worthwhile comes my way. I got a question about current sources and i will answer it. Unfortunately not in the context of the circuit i designed it for because i terminated that project. I was so happy that i got that circuit working and i thought that it was novel in the sense that i use only one amplification stage so fullfilling Orkams Rasor. Syn08 has of cause very good reasons to use more amplification and equalising stages, so has Burkhard Vogel and my circuit was not designed to prove that "simpler is better". It was not even ment as a competition but i was not carefull enough in my use of words partly because i was so enthusiastic. I hope you can forgive me that sin and we can move on to better things.
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Old 7th December 2010, 10:28 PM   #1967
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What is new about that topology? I recommended it with low Rbb' transistors (2N4405) back in 1969, to the Ampex Audio Department, without the servos, of course, as a Sel-sync amplifier.
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Old 7th December 2010, 10:40 PM   #1968
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Hi Joachim,
it strikes me hard to see these "Forum madness" grow
everywhere.
Like the others you should take it easy and go further.
Because for whitch car were the wheels newly invented ?

Hope to meet you again @ FF11.

Cheers
peter
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Old 7th December 2010, 11:15 PM   #1969
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John, that´s what i said, nothing is new and you are one of the few here that was ALWAYS there from the beginning if i do not count early Marantz and McIntosh. What i thought was new is the amount of stable feedback and speed i got by the particular choice of components. So it was like cooking an old recipy with new ingredients.
The mistake i made was not reading the copyright portion on the synaestesia website and i used some techniques proposed there without correctly identifying authorship and history.
I do not know if Burkhard Vogel reads this but i "stole" some ideas from him too, so excuse me Mr.Vogel that i did not inform you before i put that in words. There was another BIG mistake i made : I should not use the word "commercial" on a DIY thread, but fear not: There is not even a PCB existing for this prototype.
What it proved though is that a global NFB stage can be made that does not loose "single electrons" as Malkolm proposed in his legendary "Essex Echo" musings. At least my hearing is not good enough to differentiate that. And i did not listen to my inner voice that said "free your mind".
Hi Peter, sure, when i still live next year i come to the FF11 even if i have to crawl. That was the best vacation in years including "Gruppendynamik".
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Old 7th December 2010, 11:24 PM   #1970
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I was putting this topology in its place in history. Your approach is certainly more evolved than mine, 42 years ago, but it is the SAME topology. What gets me is Syn08 thinking it his topology, and that you 'stole' it from him.
One might as well ask where Syn08 got his complementary jfet topology from, in a previous circuit?
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