diyAudio

diyAudio (http://www.diyaudio.com/forums/)
-   Solid State (http://www.diyaudio.com/forums/solid-state/)
-   -   Conversion of Hiraga's "Le Monstre" to a Circlotron (http://www.diyaudio.com/forums/solid-state/146586-conversion-hiragas-le-monstre-circlotron.html)

tiefbassuebertr 27th June 2009 09:41 AM

Conversion of Hiraga's "Le Monstre" to a Circlotron
 
Hallo together

the original circuit is mirror symmetric between pos and neg halves (so called "true complementary push pull") but in real life I missed the symmetric behavior - see foto about clipping
"Photograph 6: Stability at Clipping - 1kHz into 8ohms " by URL
http://diyaudioprojects.com/Solid/Je...ga-Le-Monstre/ (scoll down, last photo)
If you compare the rising edge of lower half to the falling edge of upper half, you see the different.
Additional the 300 KHz Sine Waves are more like a sawtooth, what is bad omen (no low IM distortion at high frequencies)
How I can I convert Hiraga's "Le Monstre" to a CSPP version (cross shunted push pull)? By the output stages allone I haven't problem (there are some examples on this forum), but include the input stage I don't find solutions.
Thank you very much for your advices

tiefbassuebertr 20th November 2009 08:53 AM

really no idea?

Lumba Ogir 20th November 2009 06:48 PM

1 Attachment(s)
Gentle clipping:

tiefbassuebertr 23rd November 2009 11:26 AM

Quote:

Originally Posted by Lumba Ogir (Post 1987641)
Gentle clipping:

Thank you for this schematic, that you have download from
2SJ18 CSPP Power Amplifier
There are more interesting topologies on this website:
Evolve Power Amplifiers
But nothing to find about SRPP input stages for voltage amplifier gain stages

Lumba Ogir 23rd November 2009 08:29 PM

tiefbassuebertr,
where and why on earth would you use SRPP input stages for voltage amplifier gain stages?

tiefbassuebertr 23rd November 2009 08:59 PM

Lumba Ogir, for a maximal symetric behavior and CMR without LTP. But I think, the version of Nelson Pass match this requirement.

Lumba Ogir 23rd November 2009 09:25 PM

Do you really intend to build something?

Stee 6th January 2010 05:52 PM

no problem - cut and paste is my first quality
 
1 Attachment(s)
need just half amp - a rail for two times

tiefbassuebertr 26th April 2011 10:32 AM

the topology by post #49 about
http://www.diyaudio.com/forums/pass-...welcome-5.html
could be the appropriate solution

lineup 26th April 2011 11:24 AM

Quote:

Originally Posted by tiefbassuebertr (Post 1990130)
But nothing to find about SRPP input stages for voltage amplifier gain stages

Elektor has got a couple of projects using JFET, I think, in SRPP.
One is an headphone amplifier. The other maybe preamp.
I will try to search our forum.

Following topics:
Quote:

Veena - An Experimental SRPP Amplifier
shaan

SRPP (something like in the world of vacuum tubes) in solid state audio aplications
Bojan Hajdinjak

SRPP with FETS, what output stage?
davidallancole

jfet srpp preamp
yves


All times are GMT. The time now is 07:46 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio


Content Relevant URLs by vBSEO 3.3.2