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About possible Babelfish J interest
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Old 30th April 2015, 11:33 AM   #21
Zen Mod is online now Zen Mod  Serbia
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About possible Babelfish J interest
huh

few busy days , besides having head/eye troubles , due to some funny virus (that's fun , having kidoe in elementary school)

I sorta postponed/delayed fabrication of pcbs (do not worry , un-paused today ) due to repeated demands of making them adaptive to usage of multiplied outputs , based on two additional triplet mosfets daughter-boards per channel .


so , it's done , along with minor changes to minimize any possible PSU rippling influence (due to increased current demands with more outputs) , safe dissipation of funny (led string feeding) ccs , logical rails routing to daughter pcbs , logical sense routing etc. blahblah

so - for full stereo blastbanghurah , you need two base pcbs and four daughter boards

also tried to adapt them as possible to armchair DIY Club , to accommodate as close as possible universal-mounting-specification-v2.1 (which is far from Wild West Miracle Elixir )** .......

**anyway - if you are in this hobby/passion/whatever - you need to have few drills and taps around , and you need to know how to use them ...... nobody can't predict all possible drill/mounting schemes in this world ...

few random notes :

output mosfets of choice are IRFP150 - each one worth of two PapaIRFP240usuals ; if you're good with up to 30V rails-2A Iq - 50W/mosfet dissipation (whichever you meet first and/or together) - use one pair on basic pcb
if you need more coyones , skip basic pcb mosfets , put daughter boards and :
- for more W @ 4R load - increase sum Iq , leave rails at basic level
- for more W @ 8R load - increase sum Iq , up rails to ...... well , that you either need to know , or need to ask

for both cases - best to ask for advice - is there something needed to change , regarding few values on base pcb and how to make proper wiring

so - base pcb iteration - worth of two pairs of PapaIRFP240usuals
- base pcb sans onboard mosfets + two daughter boards - worth 6 pairs of PapaIRFP240usuals

all that speaking of one channel

in any case - minimal Iq per mosfet vertical is aroundish 400mA ; maximal - better look in conjuction with rails value , no more than 50W/device .... so veeeery close asymptotic to real FAB area

base pcb is one side copper, with tricks
daughter board two side copper , same tricks

now , on to some relaxing ...... there is sun out and I need some air through my ears/nostrils/eyes/two cells
Attached Images
File Type: png SS2.png (40.7 KB, 1435 views)
File Type: png ss3.png (97.1 KB, 1423 views)
File Type: png SS4.png (30.9 KB, 1393 views)
File Type: jpg WWME.jpg (124.7 KB, 1371 views)
File Type: jpg SO.jpg (26.4 KB, 1000 views)
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Last edited by Zen Mod; 30th April 2015 at 11:37 AM.
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Old 30th April 2015, 01:58 PM   #22
Bones13 is offline Bones13  United States
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About possible Babelfish J interest
Have fun in the sun ZM, my semi-annual golf outting is this afternoon in beautiful weather.

From what I read above, the IRFP150 x 2 on the base board will be the equivalent of the 2 "papa-standard" pairs on my Aleph J from the DIYAudio store. I hope to do the new one as mono-blocks, and keep the best sounding amplifier, giving the other to my son.
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Old 14th May 2015, 01:05 PM   #23
Zen Mod is online now Zen Mod  Serbia
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got pcbs today , delayed due to some editing - for better daughter-boards implementation ;

will match some critters and solder smallest ones during the weekend , shipping starting Monday

some lalala pics later today or tomorrow
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Old 14th May 2015, 01:36 PM   #24
Michael Rothacher is offline Michael Rothacher  United States
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About possible Babelfish J interest
I was just checking this out, super-nice work there, ZM
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Old 14th May 2015, 05:56 PM   #25
Zen Mod is online now Zen Mod  Serbia
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tnx Mr. MR
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Old 8th June 2015, 12:55 PM   #26
Zen Mod is online now Zen Mod  Serbia
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group shipment made today .....

that means that I'm going to do someting about few informative pics and schematics and sketches

all that , as always , from my own Futile Attempts Method Lab , which is (btw.) situated right near to OPLDF

few pics , read captions ...... lazy to do that tiresome insert into post thingy
Attached Images
File Type: jpg 01-what you get basic.jpg (72.4 KB, 325 views)
File Type: jpg 02-what you get basic.jpg (83.7 KB, 318 views)
File Type: jpg 03-anemic green.jpg (90.2 KB, 268 views)
File Type: jpg 03-what you get basic-JFet CCS detail.jpg (83.5 KB, 232 views)
File Type: jpg 04-Daughter boards.jpg (92.8 KB, 221 views)
File Type: jpg 05-Daughter boards.jpg (112.1 KB, 215 views)
File Type: jpg 06-Daughter boards.jpg (75.2 KB, 164 views)
File Type: jpg 07-you'll get that twice.jpg (94.5 KB, 246 views)
File Type: jpg 08-or you'll get that twice.jpg (99.9 KB, 270 views)
File Type: jpg 09-use this trimpot shape in all positions.jpg (44.1 KB, 245 views)
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Old 8th June 2015, 12:59 PM   #27
Zen Mod is online now Zen Mod  Serbia
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few more pics

btw - side-screw trimpots either pins in line or zig-zag , it'll fit

if pcb mounted vertically , all trimpot screws will point upwards , with clear path to them
Attached Images
File Type: jpg 11-this.jpg (108.1 KB, 303 views)
File Type: jpg 12-or this.jpg (92.0 KB, 261 views)
File Type: jpg IMG_2930.jpg (35.8 KB, 230 views)
File Type: jpg IMG_2931.jpg (42.1 KB, 205 views)
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Old 9th June 2015, 02:27 PM   #28
wengtech is offline wengtech
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About those 1uf mkc phillips
There are blue and yellow body with same code number
What is the different??

Thx.
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Old 9th June 2015, 03:59 PM   #29
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Beautiful work friend. Professional !
Buenisimo macho....
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Old 9th June 2015, 04:29 PM   #30
Zen Mod is online now Zen Mod  Serbia
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Quote:
Originally Posted by wengtech View Post
About those 1uf mkc phillips
There are blue and yellow body with same code number
What is the different??

Thx.
nothing - just color

( I can make them in any color you wish ......... )

Quote:
Originally Posted by dady View Post
Beautiful work friend. Professional !
Buenisimo macho....


tnx .

as everything from Futile Attempts Method Lab

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