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Old 21st April 2015, 09:43 PM   #1
Zen Mod is offline Zen Mod  Serbia
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Default About possible Babelfish J interest

Well , after some time , I'm able and willing again to bring some Babelfish J packages ; Sort of altered schematic , inlcuding cascodes (easily avoidable by choice) for input LTP , biased through my green (LED string ) trademark thingie .

Package would be comprised of :

-pcbs (one layer , usual thickness/color/overlay mumbo jumbo)) , 2 pcs,
-2 pairs of matched J271 JFets - in this project perfect
substitute/replacement for Toshiba 2SJ74BL ,
-2 pairs of BC556C bjt LTP cascode critters,
-3+3 more BC critters for various position
-2pcs of MMBF5486 smd JFets , working as CCS for cascode biasing,presoldered on pcbs,
-2 pcs of 1uF Philips MKC (polycarbonate, my fave ) , bypass for critical position - cap for Aleph CCS modulation .

so , end of list; few more details :

Output mosfets prescribed - IRFP150 (one effectively as two IRFP240), just one pair , no matching needed .
Soldering of outputs - either through hole or on wire bridges on upper pcb surface .

Due to cascoding , PSU voltage can be freely augmented for several volts. Also possible multiplying of outputs with some necessary ingenuity , but if there is enough noise , I can make daughter boards for paralleling of , say , 3 mosfets , when there is no need for additional ingenuity

That would be all , if there is enough interest , I'll proceed in Swap Forum .

Price - not cheap , but also not overly expensive , considering that rest what you need is available even in nearest Tobacco store .

Screenshot of pcb attached .

and , yes , I know that BJ isn't exactly in VFet/SIT/SIC frenzy fashion category

edit: forgot schm
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File Type: jpg BJ-sshot.jpg (86.3 KB, 442 views)
Attached Files
File Type: pdf Babelfish J.pdf (51.0 KB, 149 views)
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Last edited by Zen Mod; 21st April 2015 at 11:07 PM.
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Old 22nd April 2015, 01:10 AM   #2
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consider me interested
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Old 22nd April 2015, 01:52 AM   #3
gadut is online now gadut  Indonesia
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I'm interested ZM
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Old 22nd April 2015, 03:11 AM   #4
lafish is offline lafish  United States
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Tell me more. I wasn't in on the beginning of this conversation.
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Old 22nd April 2015, 05:11 AM   #5
Zen Mod is offline Zen Mod  Serbia
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more what ?

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Old 22nd April 2015, 05:17 AM   #6
dady is online now dady  Europe
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Old 22nd April 2015, 05:54 AM   #7
Zen Mod is offline Zen Mod  Serbia
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swell

certainly beneficial as chasing your own tail

how about this one ?

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Old 22nd April 2015, 09:30 AM   #8
Zen Mod is offline Zen Mod  Serbia
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trade post here
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Old 22nd April 2015, 09:38 AM   #9
CeeVee is offline CeeVee  Portugal
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Quote:
Originally Posted by Zen Mod View Post
swell

certainly beneficial as chasing your own tail

how about this one ?

...I have this one ...and certainly like it a lot!

That is why i am curious .

Why not go for that one and go for the BJ ? because of the outputs ?

C
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Old 22nd April 2015, 09:52 AM   #10
Zen Mod is offline Zen Mod  Serbia
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matter of choice and 200+$ difference in outputs ?

however , speaking of broad interest/possibility - (B)J2 is still sorta uncovered

that's why that opportunity is one time offer
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