"Push-Pull" for push und "Push-Pull" for pull (like Gamnut) - whats the right name? - diyAudio
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Old 12th November 2009, 08:42 AM   #1
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Default "Push-Pull" for push und "Push-Pull" for pull (like Gamnut) - whats the right name?

"Push-Pull" for push und "Push-Pull" for pull (like Gamnut) - whats the right name for this amplifier topology?
We find again and again new topologies. That kind in this thread don't match to the me good known kind of topologies (see schematics below).
I know until this day only "push-pull" (Super-ß complementary darlington and Sziklai resp. CFP dartington), some Single-ended variants and the transition topologies with only NPN BJT's or N-channel MOSFET's in the power output (quasi complementary and Totem Pole arrangements) like
Only N-Channel MOSFETs (NMOS); better Audio from non complements by Audio Power?

But what kind of topology are the follow circuits? To find more informations about "Google" I need the appropriate terms (key words)

Two examples for such topologies:
Gamut D200 clone !!! (highly interesting thread)
(schematic go to post # 39) or - and
Attached Files
File Type: pdf gamut d200 mkiii sch.pdf (34.7 KB, 966 views)
File Type: pdf voltamp.pdf (36.4 KB, 705 views)

Last edited by tiefbassuebertr; 12th November 2009 at 08:48 AM.
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Old 18th February 2010, 04:54 PM   #2
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Nobody knows, how I must call this topology ?
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Old 18th February 2010, 05:21 PM   #3
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Are those optocouplers? In my sims they always couple too slow to
take seriously as a quasicomplimentary solution. But maybe I'm just
not using them correctly? I woudn't trust any idealized models that
show no delay. I've not actually tried to build a push-pull with them.

I can't make out whats goin on in the first schematic. Way too many
parts with no specified values. I only comment on the second PDF.
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Old 1st June 2010, 01:39 PM   #4
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Default Schematic

Hi, tiefbassuebertr
Do you have full parts and value of this schematic.
I'm very interested.

Thanks
Anadigit
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Old 1st June 2010, 05:42 PM   #5
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Quote:
Originally Posted by ANADIGIT View Post
Hi, tiefbassuebertr
Do you have full parts and value of this schematic.
I'm very interested. Thanks Anadigit
No; and this was the main reason for starting this thread. If we know the right terms in colloquial English (or danish - perhaps this topology was developed by GamuT), then we find all suited Informations (and patent paper's)

http://www.stereoplay.de/Testbericht...0_2114745.html
http://www.gamutaudio.com/
http://www.enjoythemusic.com/superio...mut_system.htm

Last edited by tiefbassuebertr; 1st June 2010 at 05:48 PM.
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Old 1st June 2010, 09:14 PM   #6
Nrik is offline Nrik  Denmark
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The correct technical term is quasi-complimentary.
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Old 2nd June 2010, 12:29 AM   #7
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Default Same

Today I emailed to Gamut Audio and they said this schematic and PCB was stolen from service department by old worker (SIRIUS AMPLIFIER) !

They said this guy also sell this schematic and kits in Taiwan Ebay but I can't find it

Thanks
Anadigit

Last edited by ANADIGIT; 2nd June 2010 at 12:32 AM. Reason: wrong type
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Old 2nd June 2010, 08:57 AM   #8
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Quote:
Originally Posted by ANADIGIT View Post
Today I emailed to Gamut Audio and they said this schematic and PCB was stolen from service department by old worker (SIRIUS AMPLIFIER) !

They said this guy also sell this schematic and kits in Taiwan Ebay but I can't find it

Thanks
Anadigit
Very interesting; about Sirius I have found only this:
CES: SiriusConnect SC-V1 Audio/Video Tuner (Sirius Backseat TV) - Orbitcast.com
Sirius SC-V1 review - Car Videos
in the attached jpg-file you will find the logo of "SIRIUS".
The Question is, whether this is the same company - unlikely, because the name "Sirius" exist very often.
Attached Images
File Type: jpg Sirius-Backseat-TV-10.jpg (26.1 KB, 1274 views)
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Old 2nd June 2010, 09:23 AM   #9
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Quote:
Originally Posted by Nrik View Post
The correct technical term is quasi-complimentary.
The correct technical term is quasi-complementary.

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Old 2nd June 2010, 10:45 AM   #10
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Really? For me is a quasi complementary topology in a push pull output buffer stage follow:
A. Silicon:
1) for upper pos half a normal darlington topology (or triple)
2) for the lower neg half a Sziklai darlington (also called "CFP"; by use of triple replace the last transistor of this Sziklai darlington through a normal NPN darlington - like Quad 303)

B Germanium:
Basicly the same, but because germanium power devices mostly PNP devices, the upper half must be neg and the lower half pos.

All the other topologies like "Totem Pole" (at whole a wide range !!), that uses only NPN power devices in their output stages, for me definitely no quasicomplementary topologies - go to

Only N-Channel MOSFETs (NMOS); better Audio from non complements by Audio Power?

And the topology from this subject is complete different from that one mentioned in the thread from previous link; there is a independend true complementary push-pull driving (resp. OP-amp driving) by both upper and lower power device.

Only the fact, that only one kind of power devices in use don't for me allow the term "quasi complementary". And you will not find information about this topology by the use of this keyword in "Google".
The only present informations I find is about the URL from post #1

Last edited by tiefbassuebertr; 2nd June 2010 at 10:52 AM.
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