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Old 24th August 2011, 06:26 AM   #41
Zen Mod is offline Zen Mod  Serbia
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I can't stop laughing in last few months
PapaSIT will be greatest Greedy Boy'z sour grapes of recent era



just a thought - depletion is just secondary (tertiary...etc.) part of Nature of the Beast ;
that characteristic not worth chasing , because enhanced ones are easier to tame

or I'm babbling again ..........


edit:

I stand chastened , too ;

it is Sour Grapes not just for Greedy Boyz , fer sure .....

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Old 24th August 2011, 06:43 AM   #42
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btw.

it seems that Srajan is losing edge ( in own wakooness) in front of Papa's production palette ; this article is less euphonic , compared to some previous ones ;
even if that's the case ( sorry , I couldn't resist ) , these few sentences are of greatest verity , not just in this ( and not just FW related ) article :

Quote:
I've always understood Nelson's focus to be on finessing circuit execution to the nth degree. Strip away complexity, hone the essentials, manipulate those maximally for the intended results. It's the antithesis of the parts-swapping modifier. That one throws money at fashionable designer bits but sticks to a found circuit which somebody else smarter than he designed.
I'm (always) amused and thrilled how Papa is using , for instance , Silmics in signal path , without remorse ..... just one of fingers poked in the eye of , ahem , purists ......

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Old 24th August 2011, 07:26 AM   #43
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Quote:
Originally Posted by Zen Mod View Post
btw.

I'm (always) amused and thrilled how Papa is using , for instance , Silmics in signal path , without remorse ..... just one of fingers poked in the eye of , ahem , purists ......

What a better joy than proving them, ahem, Wrong...
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Old 24th August 2011, 07:29 AM   #44
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naah

that's certainly just one of post hoc things
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Old 24th August 2011, 10:41 AM   #45
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Mu follower/ SRPP. Same or different? Enhancement is easier because of bias considerations of top fet? I have been playing with SRPP idea with Lovoltechs. can't take the heat, but maybe give some insight into R085 SRPP. Has more extended ohmic region than anything else available barring Nelson's SIT.

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Old 24th August 2011, 10:44 AM   #46
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say that enh. mode part is on lower rail ;

biasing is simple ;


for biasing depletion mode you need another , more lower rail .

(top part isn't critical for biasing ( in case of using depletion mode one ) , because you have almost entire range to lower rail to do that )

that's at least how I see the world today



tomorrow , who knows ...
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Last edited by Zen Mod; 24th August 2011 at 10:47 AM.
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Old 24th August 2011, 10:47 AM   #47
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Couldn't tell from pics if he amp had Jfet front end
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Old 24th August 2011, 10:56 AM   #48
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that amp have just one end







..... ok - read it as - just one stage ......


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Old 24th August 2011, 01:36 PM   #49
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R100 drives SIT in Mu follower fashion. No 3 legged little bugs do I see. Wonder if 2SK82 can be substituted in DIY version.

Last edited by Tea-Bag; 24th August 2011 at 01:42 PM.
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Old 24th August 2011, 01:50 PM   #50
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moi thinks other way around

R100 is on top , driven by PapaSIT

(p)resume that SIT is more linear , and that R100 is tamed with source resistors

2SK82 - maybe 2 in parallel ..... just from top of my head , without looking at comparable characteristics (dissipation , xconductance and capacitances , to name a few )
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Last edited by Zen Mod; 24th August 2011 at 01:52 PM.
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