John Curl's Blowtorch preamplifier part II - Page 2217 - diyAudio
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Old 11th April 2012, 08:58 PM   #22161
zinsula is offline zinsula  Switzerland
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Quote:
Originally Posted by Waly View Post
Wow, so indeed, for quite some time, this guy correctly guessed the Blowtorch core schematic: [..]
September 2007? Well, we have been talking since a bit longer here and with a somewhat different input stage connection and cascoded JFet's here
Talk about going in circles ;-)
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Old 12th April 2012, 01:57 AM   #22162
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Quote:
Originally Posted by Waly View Post
Wow, so indeed, for quite some time, this guy correctly guessed the Blowtorch core schematic:

Uskok preamplifier

The author seem to be a member on this forum http://www.diyaudio.com/forums/members/moamps.html so it would be interesting to hear some comments about...
No interest here, the ramblings of a bitter person that can't deal with the fact that internet posts become public domain. Maybe the laws are different in Serbia. Posting a circuit in public here makes it public domain i.e. anyone can use it for fun or profit. Interesting this guy attacks me even though I place everything I do into the public domain (take it or leave it).
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Last edited by scott wurcer; 12th April 2012 at 02:05 AM.
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Old 12th April 2012, 06:21 AM   #22163
kamis is offline kamis  Serbia
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Uskok preamplifier designer Mr. Milan Uskokovic is from Zagreb, Croatia , not from Serbia. It is a big difference.We only have common language.
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Old 12th April 2012, 08:57 AM   #22164
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Originally Posted by PMA View Post
After several years, I have some new sims of this circuit, and it proves to be perfect.
The absence of distortion except for third harmonic is questionable. Have measurements of the real thing been revealed in this thread for comparison?
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Old 12th April 2012, 11:03 AM   #22165
PMA is offline PMA  Europe
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I have no 'real thing'. The distortion profile I have shown is only in case that the input is driven balanced and output is balanced as well. In case of any single-ended I/O, the distortion rapidly worsens. I assume the simulation result is reliable (based on experience with other circuits), of course when you increase Y axis resolution you would see 2nd harmonic and some higher harmonics as well.
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Old 12th April 2012, 02:00 PM   #22166
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Originally Posted by john curl View Post
Sorry, I can't tell the difference at first glance.
(Note ref, Serbian or Croatian)

The university of Pittsburgh used to teach the Serbo-Croatian language as a single class. After the breakup of the USSR and the outbreak of war in what was Yugoslavia they had to split it into two courses.

They speak the same language but the Croats write it in Roman characters, the Serbs use Cyrillic. The Croats think the Pope is in Rome. The Serbs in Constantinople (Now Istanbul.)


The Croats at first sided with the Nazi's in WWII hoping to be freed from Serb "Oppression." Both sides have a long history of being nasty to each other.

Now as an interesting sidelight there is a Croatian Church (Roman Catholic) not far from here that as is covered with Icons done in the late 30's and early 40's. It shows the devastating scenes of war as the artist had just come from Europe. What is most interesting is the good guys helping the poor miserable victims are wearing helmets and military garb. The cut of the helmet is distinctly German.

Now as to the website. It is interesting to note his other circuit designs. All reasonably simple designs showing no trace of diamond (or as I prefer "bridge") discrete circuits. How interesting to see the dramatic jump in design technique!

Scott, welcome to the "Diss'd" club. I have a French non-fan. But your's does seem quite a bit crazier!
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Old 12th April 2012, 02:06 PM   #22167
SY is offline SY  United States
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The Serbs in Constantinople (Now Istanbul.)
Why did Constantinople get the works? It's nobody's business but the Turks'.
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Old 12th April 2012, 02:11 PM   #22168
miklos is offline miklos  Hungary
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The Four Lads
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Old 12th April 2012, 02:14 PM   #22169
Salas is offline Salas  Greece
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Its like Vatican, the churches established their historic headquarters in places they had initially grown up.
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Old 12th April 2012, 02:29 PM   #22170
Salas is offline Salas  Greece
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Good cover by They Might be Giants also.
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