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Old 30th September 2005, 08:41 AM   #11
pinco is offline pinco  Croatia
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Omni protects the power transistors in case of overload, the speakers in case of power amp malfunction, protects amplifier in case of short circuit in loudspeaker or speaker cable or too low impedance of connected speakers, and also performs a muting function when the power supply is turned ON or OFF.
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Old 30th September 2005, 08:44 AM   #12
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Thanks Carlos for your presentation of Bora and his amplifiers!

I would like to ask Bora what is the purpose of Q3 and Q4 in the Delta design?
Does that connection have a name(after perhaps from some inventor), I have a weak memory I have seen it somewhere.

Cheers Michael
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Old 30th September 2005, 08:52 AM   #13
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Default You welcome Ultima Thule, you are deep in my heart

I cannot wait the day to have another dinner with you, the virtual one we have, in front of the swiming pool.

hehe...was great!...unforgeatable!

Well, Bora may be very happy...when a single forum guy accepted some amplifier, the work done is already paid!

Bora is a little bit busy, as he have two main professions...and some others secondaries responsabilities too.

regards,

Carlos
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Old 30th September 2005, 08:59 AM   #14
pinco is offline pinco  Croatia
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This is Studio and Omni, sorry for little mess on the desk, it is testing phase.......

Vinko
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Old 30th September 2005, 11:01 AM   #15
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Quote:
Originally posted by jaycee
The Delta is rather... interesting!!
Could you explain how it works?
I'm completely puzzled.
Looks like a positive feedback Schmidt trigger to me.
Or maybe I just drunk too little coffee today?
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Old 30th September 2005, 02:16 PM   #16
ilimzn is offline ilimzn  Croatia
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It's a Vbe compensation technique... not sure who the author was originally but it appears in Hawksford's papers.
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Old 30th September 2005, 10:09 PM   #17
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Hello everybody!
I can't believe there are already 16 posts. I've got very busy day and it was impossible for me to join earlier. First of all I have to thank Carlos for his good will and all efforts. He posses GREAT and, in today's world, pretty rare personality with amazing positive attitude! Hopefully, no one took seriously his grossly exaggerated joke-remarks about me in some previous posts! Carlos... Carlos...

I also have to stress that some of the simulation results (mainly THD) should be taken "with a good pinch of salt" for, practical results were in some cases more than 10 times worst.

ILIMZN - thanks for answering to "Ultima Thule" for me. As I expected, you gave correct answer with maybe little addition that it is actually linearising technique that I have learned from big master Hawksford. I hope, no one think even for a second that it is my invention! It is generally known as "linearised cross-quad". Anyone interested for more details should search for Hawksford's articles on the WEB.
By the way ILIMZN, I am following most of your posts for quite some time, and all I can say is... congratulations!!!... you posses remarkable knowledge as well as fine sense for details and even more for essence of designs. I am glad to say I know you!

Damn... "darkfenriz"! I was hoping that no one would recognize it! Yes, it was started as an audio amp. idea, but ended as High-End Schmidt trigger... of course, high power one.
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Old 30th September 2005, 10:14 PM   #18
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i have listened to amplifier called "Sigma" once...i sounded really nice...but i didn't know that the designer is from my country...funny
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Old 30th September 2005, 11:11 PM   #19
Zen Mod is offline Zen Mod  Serbia
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Quote:
Originally posted by Dragance007
i have listened to amplifier called "Sigma" once...i sounded really nice...but i didn't know that the designer is from my country...funny
"speak Serbian........"

(".....and entire world will understand ya!")


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Old 30th September 2005, 11:32 PM   #20
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Default Needing to have conversation, i can speak Serbian.

Projacala...you see!...this is amplifier....hehe

The thread main responsable, Baraomega arrived...good to see you Bora.

regards,

Carlos
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