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Old 13th April 2005, 10:19 PM   #1
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Default 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
Click the image to open in full size.
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Old 14th April 2005, 09:23 PM   #2
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Looks very clever to me.

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Old 15th April 2005, 04:49 AM   #3
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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!
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Old 15th April 2005, 05:00 AM   #4
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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.
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Old 15th April 2005, 07:16 AM   #5
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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
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Old 15th April 2005, 04:04 PM   #6
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Click the image to open in full size.
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.
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Old 18th April 2005, 06:34 AM   #7
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Click the image to open in full size.
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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