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-   -   Supersymmetry Circlotron (http://www.diyaudio.com/forums/pass-labs/55361-supersymmetry-circlotron.html)

Circlomanen 13th April 2005 10:19 PM

Supersymmetry Circlotron
 
Here is a small supersymmetry(???)-circlotron preamp circuit i have been exprimenting with. Its easy to scale up to a poweramp.
The outputs are where minus attaches at the IRF9510 drains. No capacitors are needed
http://img189.echo.cx/img189/337/circlobalobal9tj.jpg

Nelson Pass 14th April 2005 09:23 PM

Looks very clever to me.

:cool:

Circlomanen 15th April 2005 04:49 AM

Quote:

Looks very clever to me.
Thanks!!!
I have a little 2 x 15 watt permutation of this amp att home that I have been listening to for about half a year or so, it sounds wonderfull.
And Thank you Mr Pass for the "X" typ of circuits! Its a brilliant invention!

Circlomanen 15th April 2005 05:00 AM

In an poweramp with this topology you dont have to use batteries on the inputs.
I use batteries to be able to use higher values in the feedback, but still have the amp DC coupled. But a power amp can easely drive 47 ohm feedback resistors, and that is what the 2SK170 like on their sourcepins to give 3-5 mA current.

Andypairo 15th April 2005 07:16 AM

Quote:

Originally posted by Circlomanen

Thanks!!!
I have a little 2 x 15 watt permutation of this amp att home that I have been listening to for about half a year or so, it sounds wonderfull.
And Thank you Mr Pass for the "X" typ of circuits! Its a brilliant invention!

Can you post its schematic? I'd like to give it a try ;)

Cheers

andrea

Circlomanen 15th April 2005 04:04 PM

http://img51.echo.cx/img51/8513/soli...rclo9kn2ci.jpg
Its a year old design and I built it before I started to implement X into my circuits. I have tried X feedback but I dont want to rebuil it and I dont want alligatorclips all over my amp. So I ripped it out. It sounded very nice though.

Circlomanen 18th April 2005 06:34 AM

http://img190.echo.cx/img190/866/oba...nverter3dy.jpg
This would be a "verical" arrangement of that amp.
I sketched down this idea a couple of years ago, but I have never tried it.
I should work.


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