My update lin topology - Page 8

GEirin · 4th November 2009, 02:32 AM

Hi AndrewT
Thank you very vey very much.
I will try those suggestions
Guillermo

GEirin · 4th November 2009, 11:33 PM

Hi
I´ve done changes.

AndrewT:T6 could be replaced with a To92 dual transistor multiplier.
The first To92 could be on the common sink fitted to T7+T8, the second could be on the main outputs heatsink.
My questions, which configuration, darlington, Sziklai?
Opinions?
Thanks

AndrewT · 5th November 2009, 11:55 AM

Quote:

Originally Posted by GEirin

T6 could be replaced with a To92 dual transistor multiplier.
The first To92 could be on the common sink fitted to T7+T8, the second could be on the main outputs heatsink.
My questions, which configuration, darlington, Sziklai?

neither.
The dual transistor is a pair of NPN+PNP series connected at the emitters.
Base to Base resistor is VR. Base to collector resistors ( one to each Q) can be ~1k0 to 2k0.

Lumba Ogir · 5th November 2009, 01:07 PM

GEirin,
it looks really nice now. But BC560 and 2SA1360 should form a simple current source, please!!!

Lumba Ogir · 5th November 2009, 01:57 PM

GEirin,
you need PNP devices there.
This is another possibility:

GEirin · 5th November 2009, 07:17 PM

Hi, AndrewT and Lumba, thanks very much.

GEirin · 5th November 2009, 07:24 PM

AndrewT
Which is the advantage of this tipology?
This tipology is suitable for asymmetrical amplifier?
Thanks.

Lumba Ogir · 5th November 2009, 07:59 PM

GEirin,
Eirin,
you could consider the diamond buffer output:

GEirin · 5th November 2009, 08:57 PM

Lumba Ogir
Advantages? Diamond buffer output vs. CFP driver Ef output?

Lumba Ogir · 5th November 2009, 09:23 PM

GEirin,
right. Considerably greater linearity, also greater thermal instability.

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4th November 2009, 02:32 AM	#71
GEirin diyAudio Member Join Date: Jun 2004 Location: Mendoza	Hi AndrewT Thank you very vey very much. I will try those suggestions Guillermo

5th November 2009, 01:07 PM	#74
Lumba Ogir Banned Join Date: Apr 2005 Location: Stockholm	GEirin, it looks really nice now. But BC560 and 2SA1360 should form a simple current source, please!!!

5th November 2009, 07:17 PM	#76
GEirin diyAudio Member Join Date: Jun 2004 Location: Mendoza	Hi, AndrewT and Lumba, thanks very much.

5th November 2009, 08:57 PM	#79
GEirin diyAudio Member Join Date: Jun 2004 Location: Mendoza	Lumba Ogir Advantages? Diamond buffer output vs. CFP driver Ef output?

5th November 2009, 09:23 PM	#80
Lumba Ogir Banned Join Date: Apr 2005 Location: Stockholm	GEirin, right. Considerably greater linearity, also greater thermal instability.

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