You still don't understand the adding a resistor is the SAME to put a Rp of a tube!!!!!!!!!!!!!!!!
Equivalent circuit ( from Jones) it is common rapresentation of a low frequency circuit
The generator and Rsource is a TUBE; the Lp is the inductance of the trafo
And in a real circuit is not possible to omit
There is no sense ( in my opion) to test the OT with Zs = zero ohm ( or similar)
In addition from RAdiotron
"Other source of distortion" is mentioned; in addition, of course, of the one comes from tubes
And it is also true that with the new materials this aspect is better that 60-80 years ago.
But the diagram come from Jensen ( posted time ago) is clear
Ha ha ha, ofcourse it is, that is also in the papers of Partridge, try to read them!
You say you want to measure “the true distortion” of the transformer. Ha ha ha so funny.
You say you want to measure “the true distortion” of the transformer. Ha ha ha so funny.
A resistor doesn't entirely replace a stage, especially the common cathode SE one. You have asymmetrical Rp nonlinearity which makes even THD.
What are you smoking, man? Looks like you are laughing at yourself.
Where did I say “the true distortion” ? You are telling me to try to read something, when you cannot
read 2 lines of simple text correctly. I said "true test", for your info, test is quite more than just THD.
Listening is also a test.
Sorry guys for my non technical essay.
??? Waltube, is that you? Double account?
But anyway is is so funny that Walter keeps trying and now he found another source/article which shows exactly what partridge did and now he even says that adding a resistor is the SAME to put a Rp of a tube. Duhhhh that should be clear from the start!
And he still not knowing what he is doing... what a drama
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Absolutely right, plus the loudspeaker is not a constant impedance load throughout the frequency range.
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Man, you got to stop smoking hash, it is getting you out from reality.
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Yeah and confirm Partridge a serie resistor after the source (or Rp tube or ss forward methode or reverse) wil introduce voltage distortion.
This means you not measure the transformer but the source*
* the source = amplifier + serie resistor
Are you also a liar? Haven't read Partridge's articles? In post 73 you can see the evidence. Do you want to deny that, or are you just the next fool? Come with proof or else sit at home.
And there is more evidence .....
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No, absolutely not.
The resistors are the only way to have the the real performances of trafo itself ( probably is not the right english definition)
Then, we can speak with the real amp stage with a real load. With the relative test.
You still continue to don't undestand the problem
This is you great limit.
The Rp of the tube is ALWAYS present in a tube power stage and it is a part of the entire circuit.
And, given a ss amp with a low THD, what do you measure the thd of a resistor that is LINEAR?
If you test he OT with Zs= zero ohm what do you think to see?
In addition the Rp of a tube is almost costant and the parasitic are involved mainly at high frequency ( this is another film)
You are a fool Walter, you not understand the theory and you are doing "something", not knowing what it means. You initial test was with RP = Rload ( for your 2500/6 Ohm transformer you used 2500 Ohm and 6 Ohm)
BUT if you want to do something for a relative test, there are more options. But you are not the man to develop such a test because your knowledge is far behind what is needed to make a propper test. What I've seen so far is that you only do simple tests, no sqw test, no insertion loss test and so on.
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Yes our initial test was done with the nominal ratio of the trafo under test.
And then?
After that we used, in this case, an R = Rp pf a 300B ( less or more) of 750 Hz.
And this give us a better view of the trafo with different Zs.
Great info and great visual!!
And then?
After that we used, in this case, an R = Rp pf a 300B ( less or more) of 750 Hz.
And this give us a better view of the trafo with different Zs.
Great info and great visual!!
I understand that YOU are the problem. You still did not read the article or don't understand it. Rp is a function of the distortion! ANY serie resistor in line with the source! READ Partridge!
It was YOU who made a schemetic with a serie resitor of 6 Ohm and a secondary resistor of 2500 Ohm and presented it as the right way and easy way to measure an output transformer in a reverse methode.
Timpert showed you that your methode will not give you the right frequency respons in real life if you use a triode tube (as a 300B).
The articles of Partridge shows that if you use your methode you introduce voltage distortion. In real life we will also not have a source with zero impedance but that is another problem. You did measured with a to high resistor.
You still ignore Partridge and you not have given any proof that Partridge is wrong!
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what are saying?
The moderator can check.
You are out of the reality.
Another post like this then I will ask some action from moderator.
Rp is one of the cause of distortion but it is there, you can't modify or change as you want or cancel in the real world.
Go to the mirror, look if you see a troll in there. I am not gonna argue with you, I will not talk to you any longer. I don't want to talk to a clown, it is not a comedy show.
Partridge is scientific proof AndreK. Wiould you deny that? Why? I just give you his answer on this problem.
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"And, given a ss amp with a low THD, what do you measure the thd of a resistor that is LINEAR?"
Really? Read Partridge