[sdiy] pcb layout help

Harry Bissell Jr harrybissell at prodigy.net
Thu Aug 26 18:05:21 CEST 2004


The only thing missing from the hookup list
in the pcb diagram is that the INPUT jack is
normally a stereo 1/4" jack... with the ring
tied to the negative terminal of the battery.

When a normal MONO plug is inserted, the sleeve
shorts the ring to ground, connecting the battery.

It saves a switch, and the power is disconnected
whenever the input plug is removed.

This of course is common knowledge for use
synth-diyers
who cross-dress as guitar-diyers   :^P

H^) harry (bet THAT was more info than you needed :^)



--- Fredrik Carlqvist <ifrc at iar.se> wrote:

>  
> 
> Well my guess is that point 2 is the audio output,
> which should connect to
> the top of the volume control. The bottom of the
> volume pot and the 9-V
> negative pole connects to 4,5,6. The output will
> come from the middle
> terminal of the volume control. 
> 
>  
> 
> Fredrik C
> 
>  
> 
>  
> 
>   _____  
> 
> From: owner-synth-diy at dropmix.xs4all.nl
> [mailto:owner-synth-diy at dropmix.xs4all.nl] On Behalf
> Of Nrthrnsol at aol.com
> Sent: Thursday, August 26, 2004 03:47
> To: synth-diy at dropmix.xs4all.nl
> Subject: [sdiy] pcb layout help
> 
>  
> 
> hey guys
> i am looking at this pcb layout
>
http://bryant02.home.att.net/pcbs/screamingbirdlayout.gif
> and still being a beginner 
> i have a few questions
> 
> where does the 9V ground connect to?
> where does the volume connect?
> i see the output ground but where does the other
> output part connect to?
> 
> any ideas?
> 
> thanks
> johnny
> 
> 




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