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  #1  
Old 16th January 2009, 03:59 PM
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Steef Steef is offline
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Default my last invention

who know SIA
Stee Inventor Agency?

every mounth one new

see this project
to avoid crossover distortion in CFP Output Stage
(the best for speed and accuracy)
there are a double copules of EF Emitter Follower
(most famous and stable)
in parallel of CFP

the result is CEFP
Complementary Emitter Feedback Pair

very important is select true matched pair
for example I'm found 2SA1302 nad 2SC5200 COPULES
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  #2  
Old 16th January 2009, 10:11 PM
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Dave the bass Dave the bass is offline
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Default Re: my last invention

Have you built it? Does it sound wunnderful?

DTB
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  #3  
Old 16th January 2009, 10:23 PM
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Default Re: my last invention

sorry not yet
maybe I have time this WE
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  #4  
Old 17th January 2009, 12:19 AM
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Default Re: my last invention

I hope you have the time. Let us know how you get on.
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  #5  
Old 18th January 2009, 09:08 AM
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Default Re: my last invention ready for test

this CFP + EF Output Stage have a complete schematic now
comes from Rotel RB 976 MKII ---> essential quality

better use NTE37MCP as Final (i have order 4 copules for this)

NTE36(NPN) + NTE37(PNP) Matched Complementary Pair

TOSHIBA 2SA1930 + 2SC5171 as driver

see also the source
http://www.esafono.it/rotel.pdf
http://www.esafono.it/aaa.pdf
http://www.esafono.it/bbb.pdf
http://www.esafono.it/ccc.pdf

Ladies and Gentlemen you can see The Chet Baker Amp on this image:
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Last edited by Steef; 18th January 2009 at 10:45 AM. Reason: do you know Chet?
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  #6  
Old 19th January 2009, 07:40 PM
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Default Re: my last invention is not mine

http://www.bryston.com/BrystonSite05/BrystonDocs.html

important know that works
a copule for tension
another for current!
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  #7  
Old 20th January 2009, 05:23 PM
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Default Re: my last invention

much fine
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  #8  
Old 23rd January 2009, 07:32 AM
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Default Re: my last invention

more easy
http://digilander.libero.it/essentia...to_circuit.htm
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  #9  
Old 26th January 2009, 06:25 PM
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Default Re: my last invention

speed + stasis without distortion?
see this A-700 from DIYGENE

NOT YET TESTED
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  #10  
Old 8th February 2009, 02:22 PM
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Default Re: my last invention

a good base to apply new tipology

http://cgi.ebay.it/BGR-Blazer-X6-600...742.m153.l1262
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