Poor Serbian Man Optical Volume Control

[Zen Mod]

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)

[Zen Mod]

PSMLS reg ;
again drawn by engineer hand

[Zen Mod]

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

[Zen Mod]

buffer's supply

[Zen Mod]

overall buffer & supply schmtc

[spavleski]

fugly, "sick minded"

[Zen Mod]

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

[Manu]

Beautiful job crazy serbies

Zick Mind, your productivity is simply amazing


Manu

The question is : will it drive F4?

[Zen Mod]

Originally posted by Manu
........

The question is : will it drive F4?

yup , certainly - if instead buffer part you use

[Zen Mod]

hehe

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

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