Schematic symbol????

[Rafa]

Hi:
I saw this symbol on a schematic but I dont know what to do, its a stero pot, which one of the pots (1,2,3) is conected to - and output terminals of an opamp.The problem is the other pot which is supoosed to be conected to grond

Thanks
Cheers
Rafa

[MartyMart]

The two pot sections are spearate, so no worries :
Left connection, lugs 3&2 tied to one node and lug one to another
Right connection is wierd, looks like all three lugs go to ground ??
are you sure that drawing is correct ? .... what's it from ?
MM.

[Rafa]

Completely sure!
I copied it exactly from the schematic.

[slacker]

Can you post the rest of the schematic? I can't really make sense of the second half of the pot.

[Rafa]

Slacker:
mmm No, Im afraid not. its from stepahns moeller AC30 simultaor.

[ambulancevoice]

well, post more of that section where the pot is located, instead of the whole thing like oh my brother

[MartyMart]

Rafa, in the schem that pot symbol is "floating" and not connected to anything, so I wonder if it's a leftover
or an image of how NOT to wire up a pot ! ( or numbered to indicate PCB connections etc )
Just use a single 10k pot at that point ( FB loop )
Look at the lower section before the "SEND" section .... there's another 50k pot wired with all three lugs shorted to
ground ... perhaps to confuse the "cloners" who may have got the schem ... ignore that also !!

MM.   

[Rafa]

[MartyMart]

There are various things about that complete schem that are at very least "suspect" !
Why on earth when using NE5532's and OPA's would you need +/- 11v along with =+/- 15v !!
You only need the +/- 15v rails and 0v centre bias ( ground )
Have a good look and erase the "bogus" parts !
Is it a "worker" .... hmm .... not 100% sure for all that effort mate ...

MM.

[PerroGrande]

Perhaps on the original, PCB-mount dual-gang potentiometers were used throughout the design...