[sdiy] wiring pots.

[Happy Harry]

In general, wiring all the pots in parallel should not be
a problem. Usually there is little interaction between them.
It might be a good idea to include some decoupling caps from
+12 to ground, and -12 to ground... every so-many pots
(maybe each row ???)

If turning the pots causes an unwanted change in some other
function... look into that problem on an individual basis.

Funny story... My rev 3.2 Prophet V had only 'one' decoupling
cap for all the pots. The noise pickup made it go into edit mode...
took the factory five software revs (each one worse...) to finally
figure that the hardware was no good.  I added the decoupling caps
per good practice... problem solved.  Don't make the mistake of thinking 
that you don't need decoupling because pots are not "active"
components... they are a moving part as well as a nice antenna
(noise and hum magnet)...

H^) harry




>From: ElmacacoX at aol.com
>To: synth-diy at node12b53.a2000.nl, EFM_Synth at egroups.com
>Subject: [sdiy] wiring pots.
>Date: Mon, 14 May 2001 11:09:58 EDT
>
>Hi everyone,
>
>the star ground question got me thinking about my plans for today.
>
>I was going to wire up all the pots for the SBM (about 62 pots)  some of 
>them
>go from groung to V+, and others go V- to V+ (on the extreme pins)
>
>is it ok to 'daisy chain the V+, ground and V-, from pot to pot, from one
>wire from the PSU to one pot? , or is this not a good idea?  I don't mind
>extra work if it means it'll work right.
>
>thanks guys
>
>Eduardo

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