Poor Serbian Man Optical Volume Control - diyAudio
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Old 4th December 2008, 09:50 PM   #1
Zen Mod is offline Zen Mod  Serbia
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Default Poor Serbian Man Optical Volume Control

here it is ;
result of collaboration of few Serbian DiyAs - one engineer mind (sp300b) and one sick mind (ZM)

as usual - ZM does all back of napkin drawings and some testing , sp300b does some much more testing and pcbs ;

find schematics enclosed ; pcbs are in stage of testing ..... in fact - pcbs for PSM Optical Volume

are ordered , and pcbs for separate buffer are in developing ;

first - PSMLS schematic ; nice drawn by sp300b ( not in my usual gorgeoushandscribing way )

it's intended either for stereo balanced or stereo unbalanced ( omitting
4 LDRs)
Attached Images
File Type: jpg psmlsw.jpg (84.5 KB, 8478 views)
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Last edited by Variac; 13th January 2010 at 03:47 PM.
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Old 4th December 2008, 09:53 PM   #2
Zen Mod is offline Zen Mod  Serbia
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PSMLS reg ;
again drawn by engineer hand
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File Type: jpg ldr_supply_choky.jpg (26.0 KB, 7118 views)
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Old 4th December 2008, 10:01 PM   #3
Zen Mod is offline Zen Mod  Serbia
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separate pcb for buffers and dedicated supply/reg will contain 4 buffers

.........4 pcs of good ole JC buffer , as sp300b's wish ...... even if I intent to use real poor man's choice - pair of J310 jfets in "source follower up/CCS bellow" configuration .....

this time my fave back of napkin drawing
Attached Images
File Type: jpg buffer.jpg (21.6 KB, 7103 views)
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Old 4th December 2008, 10:03 PM   #4
Zen Mod is offline Zen Mod  Serbia
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buffer's supply
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File Type: jpg buffer_supply_finnal.jpg (34.0 KB, 6540 views)
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Old 4th December 2008, 10:05 PM   #5
Zen Mod is offline Zen Mod  Serbia
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overall buffer & supply schmtc
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File Type: zip buffer&supply final.zip (56.1 KB, 757 views)
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Old 4th December 2008, 10:07 PM   #6
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fugly, "sick minded"
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Old 4th December 2008, 10:13 PM   #7
Zen Mod is offline Zen Mod  Serbia
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Quote:
Originally posted by spavleski
........

I hope now is time to leave that stick from your hand - resting ......
I'll be back to my usual lazynessssssss

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Old 4th December 2008, 11:22 PM   #8
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Beautiful job crazy serbies

Zick Mind, your productivity is simply amazing


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The question is : will it drive F4?
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Old 4th December 2008, 11:28 PM   #9
Zen Mod is offline Zen Mod  Serbia
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Quote:
Originally posted by Manu
........

The question is : will it drive F4?

yup , certainly - if instead buffer part you use

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Old 4th December 2008, 11:31 PM   #10
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Default confusion or not

hehe

I'm mixing some things ......

spavleski is sp300b on our local forum , not here ........

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