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 .......... 😉
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I stand chastened , too
;
it is Sour Grapes not just for Greedy Boyz , fer sure .....
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 .....
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 :
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 ......
😀
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 :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 ......
😀
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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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 ...
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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R100 drives SIT in Mu follower fashion. No 3 legged little bugs do I see. Wonder if 2SK82 can be substituted in DIY version.
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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 )
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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disclaimer :
ZM is still & always dumbest boy in town ;
Papa:
that can be anything ..... SIT on top , SIT down .... really depending of fact from which side you're looking
ZM is still & always dumbest boy in town ;
Papa:
that can be anything ..... SIT on top , SIT down .... really depending of fact from which side you're looking
Mu follower suggest drive transistor with current source. R100 on top makes for better current source, acting like pentode, increasing impedance and allowing full gain of bottom SIT to be used if so desired. SRPP would have SIT on top and bottom, hopefully receiving as balanced a signal as possible and acting more like quasi push/pull. All this is speculation😀. I don't really know, but trying to figure out.
Since you are speculating, the current source is not constant. It has
a small amount of compliance, on the order of a hundred ohms, which
makes its load-line participation small.
😎
a small amount of compliance, on the order of a hundred ohms, which
makes its load-line participation small.
😎
The R100 is on the top, red cable +voltage, and the SIT is in the lower part, input cable....look at the picture.😀