Baxandall Super Pair - Page 11

WaltJ · 11th July 2012, 07:44 PM

Quote:

Originally Posted by Edmond Stuart

Hi Walt,

If time permits, you also might have a look at my website for more information about the 'Super TIS'.

Cheers,

Edmond.

The double diff pair in itself isn't new, having been used since the late 60's/early 70's. Or ask John Curl.

See a summary of some references on it, within my Duncan/Self power amp book review.

Using the B-S circuit as a current mirror also isn't new. See Fig. 3 within reference 11, i.e., "In #11 the Thompson composite complementary pair is used in Figures 3 and 4 as a current mirror employing 2N3904/3906 discrete transistors."

I don't mean to sound critical here, but you asked if I'd seen this circuit. Just pieces, as noted. Overall it looks like a fascinating circuit, but as it seems, validated thus far via SPICE. Is this correct?

Walt Jung

Edmond Stuart · 08:10 PM

Hi Walt,

You are right, all the pieces, in its own right, aren't new. The only thing that is probably new is the combination (and application) of these pieces, in particular with TMC.

>validated thus far via SPICE
That's correct. At the moment I'm busy with gathering components and PCB artwork. I hope it does work in real life as well.
Thank for comments.

Cheers,
E.

WaltJ · 11th September 2012, 04:04 PM

Readers should carefully note the correction of the Baxandall-Shallow authors. I am attaching an updated PDF, which corrects post #87, which erroneously refers to them as "Baxandall-Swallow".

I regret any confusion this may have caused.

Walt Jung

tiefbassuebertr · 07:10 AM

in this case this URLs also of interest:
The "Starved-Circuit" Amplifier Is Revived In A Transistor Version
and
Compound vs Darlington

homemodder · 12th September 2012, 10:40 AM

Tief I fail to see what sziklai has to to with super pair.
The CCS amp is interesting, know the patent and the author ?? I ask because Ive seen that circuit published in public and wondering if its the same author.

11th July 2012, 08:06 PM	#102
Edmond Stuart diyAudio Member Join Date: Nov 2003 Location: Amsterdam	Hi Walt, You are right, all the pieces, in its own right, aren't new. The only thing that is probably new is the combination (and application) of these pieces, in particular with TMC. >validated thus far via SPICE That's correct. At the moment I'm busy with gathering components and PCB artwork. I hope it does work in real life as well. Thank for comments. Cheers, E. __________________ Een volk dat voor tirannen zwicht, zal meer dan lijf en goed verliezen dan dooft het licht…(H.M. van Randwijk) Last edited by Edmond Stuart; 11th July 2012 at 08:10 PM.

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12th September 2012, 10:40 AM	#105
homemodder Account disabled at member's request Join Date: May 2006	Tief I fail to see what sziklai has to to with super pair. The CCS amp is interesting, know the patent and the author ?? I ask because Ive seen that circuit published in public and wondering if its the same author.