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

[Nevod]

tiefbassuebertr
I think that when using NMOS only, one can pull out all the tube topologies out of the box.

[tiefbassuebertr]

Originally Posted by Nevod

tiefbassuebertr
I think that when using NMOS only, one can pull out all the tube topologies out of the box.

This could be possible, but I have never tested.

Basicly it would be easy find out by the circlotron topology (= CSPP resp. PPP) without transformer (i. e. OTL)

If you have an OTL circlotron tube power amp GM-20 (Graaf) and a finished MOSFET circlotron diy project at the same time, you can comparable both of them and tell about the results.

I have heard both of them, but unfortunately not at the same time

here a URL about MOSFET CSPP
http://www.hinocatv.ne.jp/~s_suzuki/...OS/UHC-MOS.htm
and two jpg's and a schematic about the GM-20:

[tiefbassuebertr]

Originally Posted by Workhorse

Phase splitter is best for the N-Channel Mosfet Drive topology.

Here are description a special quasi compl. version include a distortion removal circuit - of the japanese URL
Distortion removal circuit
and the automatic translation in English
Google Übersetzer

[tiefbassuebertr]

Originally Posted by tiefbassuebertr

Here are description a special quasi compl. version include a distortion removal circuit - of the japanese URL
Distortion removal circuit
and the automatic translation in English
Google Übersetzer

no comments to this topology from Japan?

[tiefbassuebertr]

another approach in this context
It's cheap, it's N, it's dirty, it's.... The CIRCLOMOS!!!

[wahab]

can i suggest a serial dual differential ? it s balanced as
the phase spliting is naturally present in this topology...
i would go this way if i had only one kind of power devices...

[tiefbassuebertr]

Originally Posted by wahab

can i suggest a serial dual differential ? it s balanced as
the phase spliting is naturally present in this topology...
i would go this way if i had only one kind of power devices...

Then you have an circlotron input stage - so I think (CSPP). Check out this thread:
URL collection of Totem Pole and CSPP (Single Ended related) Solid State Output Stage

now there are additional topologies here on diyaudio, where used only N-Channel MOSFETs resp. only NPN BjTs: in the output power stage:
1) Circlomos from Elvee
It's cheap, it's N, it's dirty, it's.... The CIRCLOMOS!!!
2) Super-Pair Buffer from Linuxguru
Low-distortion Super-pair Buffer simulation schematics
3) Kenpeter's follower - three in one (very special) go to post #47 about
four transistor emitter follower (diamond buffer) as power output stage?
4) Class-B without crossover-distortion
Class B w/o crossover distortion (1975)

Number 2, 3 and 4 I haven't investigate, but it looks very interesting. If the author have found a method for reliability stabilizing of the idle current through the output for number 1, we have a very fine power amp topology.

[Scytales]

I have the schematics of the Cabasses AM/AS1000 amplifiers which show class G output stage topology where the inner devices are N-channel MOS-FETs IRFP240, whereas the outer devices are complementary MOS-FETs IRFP9150/IRFP150, driven by a differential amplifier.

[audiodesign]

look this

Hybrid Amplifier by Andrea Ciuffoli

[Bigun]

Originally Posted by audiodesign

look this

Hybrid Amplifier by Andrea Ciuffoli

did you look at the schematic ? - the output is shorted to the -ve rail.