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Old 30th September 2005, 10:35 PM   #21
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Default Studio amplifier!

My picture of Studio amplifier.Soon more......
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Pa mislim sta reci!
Ce sa spun!
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Old 30th September 2005, 10:56 PM   #22
Zen Mod is offline Zen Mod  Serbia
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Default Re: Needing to have conversation, i can speak Serbian.

Quote:
Originally posted by destroyer X
Projacala...you see!...this is amplifier....hehe

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

regards,

Carlos

hehe-almost.......
pojacala-amplifiers

pojacalo-amplifier

pretpojacalo-preamplifier




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Old 30th September 2005, 11:15 PM   #23
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It seems, I overlooked jaycee's question. Sorry!
One will find BF470/469 frequently in my designs and there are few (for me) good reasons for that: at one moment I've managed to obtain cheaply a significant quantity of them, I have BF470/469 simulation model in my SPICE program, they appear to exhibit more linear transfer characteristic than majority of similar units on the "current fashion" list,
and their internal capacitance's are significantly lower allowing less
problems and faster amps. Praxis proved me right for now. They use to be readily
available anywhere ( for previously mentioned reason I am not aware that they are discontinued?!), they are in a handy package-case and with very usable Uce and
dissipation.
Even thou I didn't test them as replacements, I strongly believe that something like MJE340/350 or newer version like BF869/870 (I think they are in different package?) should be adequate. Certainly, there must be at least a dozen of Japanese complementary pairs to fulfill requirements. Maybe Sanyo's 2SC3116/2SA1248 or alike...

Pozdrav od sveg srca za sve moje "zemljake", a ja bez razlike pod time podrazumevam sve one koji razumeju ove reci!
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Old 1st October 2005, 01:50 AM   #24
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Karlos, you must learn serbian or even better macedonian!

Here on south of Europe we have some miracles in electronics too!
I'm glad for my neighbours from north, same for us macedonians!

Bora, radujem se sto tvoje znaje i iskustvo nalazi pravo priznanje, a diyAudio sajt je pravo mesto za svakog audio fanatika.

Najsrdacniji pozdrav! = (best regards)
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Old 1st October 2005, 06:25 AM   #25
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Default Audio fanatika was good.... i understood!

I told you...i will learn Macedonian too.

regards,

Carlos
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Power supply; ripple, filter, noise, stability and the use of capacitance multiplier... Portuguese and English; https://www.youtube.com/watch?v=sSm0ku1eIgg
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Old 1st October 2005, 07:03 AM   #26
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Default By the way...i am sorry i wrote Bora's country name wrong.

Serbia is the correct name....i wrote Servia and this is wrong.

I am afraid that Servia can be something very bad.

Alike your wife's mother moving into your home!.... oh!...pain!!!.... oh!...do you like your mother in law?

hehe..i can send mine to you!...if you promiss not return.

regards,

Carlos
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Power supply; ripple, filter, noise, stability and the use of capacitance multiplier... Portuguese and English; https://www.youtube.com/watch?v=sSm0ku1eIgg
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Old 1st October 2005, 11:36 AM   #27
r!sc! is offline r!sc!  Serbia
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Hi there! Whoo, so much people from the Serv(b)ia
Bora is a great guy. Everytime when we ( young audio enthusiast ) have some problems in our audio works, Bora is there to help and advice us. Thanks Bora!

Ziveli ljudi! = Cheers people!

Boban
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Old 1st October 2005, 12:14 PM   #28
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Default Ziveli Ijudi.....hehe...speaking SerBian now!

Cheers,

Carlos
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Power supply; ripple, filter, noise, stability and the use of capacitance multiplier... Portuguese and English; https://www.youtube.com/watch?v=sSm0ku1eIgg
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Old 1st October 2005, 12:57 PM   #29
pinco is offline pinco  Croatia
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Default Re: Ziveli Ijudi.....hehe...speaking SerBian now!

Quote:
Originally posted by destroyer X
Cheers,

Carlos
If you say " Zivjeli ljudi" you can even spook Croatian....

Pozdrav svima, poseban pozdrav Bobanu i Bori, !!!!
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Old 1st October 2005, 01:52 PM   #30
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Bora, your Goliath amplifier is a straight adaptation of Elektor's Crescendo amplifier. I wonder how it works at all, since you have used vertical mosfets and there is no Vgs, or Vbe multiplier or any other temperature sensing mechanism at work. If anyone has every tried this amp practically, thermal runaway should have occured some time or the other. Any explanations?

The other designs look great. Perhaps I'll try them out after I have finished with the GEM (testing prototype in two hours time!!)
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