--- Dieter Doepfer < hardware@... > wrote:

> From: "Dieter Doepfer" < hardware@... >
> To: "Bakis Sirros" < synth_freak_2000@... >
> Subject: Please forward ...
> Date: Thu, 27 Nov 2003 12:58:51 +0100
>
> > -----Urspr�ngliche Nachricht-----
> > Von: Julian [mailto: julian@... ]
> > Gesendet: Donnerstag, 27. November 2003 06:08
> > An: Doepfer_a100@yahoogroups.com
> > Betreff: 1 question for those whove
> built custom enclosures
> >
> >
> > Hi there,
> >
> > Just a quick question for those of you whove done
> away with the G6s and
> > G3s...
> >
> > Are you using doepfer bus boards, or have you made
> your own out of
> > stripboard and IDC headers
>
> This is not recommandable as the cross section of
> flat cables is not
> sufficient for higher currents (up to 650mA with the
> standard power supply)
> and will cause voltage losses on the +/-12V and GND
> line that could cause
> malfunctions of modules. The voltage loss increases
> with the cable length
> and reverse to the cross secion of the cables. For
> only a few modules this
> solution may be OK but not for larger module
> arrangements. The bus board has
> large planes (especially for GND) to recude this
> voltage loss.
>
> > Now i havent looked at the bus board layout
> > yet, but i know the connectors are 10 pin, so
> analogue and digital
> grounds,
> > plus and minus, cv and gate.
>
> The bus is documented on our web site (A-100
> Technical Details / A-100
> Mechanical Details)
>
>
> > Thats six, which meens cutting strips, or are
> > the Agnd and Dgnd combined Yes, i know i can
> look when i get all the
> > modules out, but id rather work it all out before
> i start messing :)
> >
> > I didnt really want it to turn out like that, but
> the psu that ive aquired
> > is pretty high ampage, at about 3.4, when i was
> aiming at about 1.5. Am I
> > correct in thinking that the only real
> disadvantage of this is if i get a
> > short somewhere more dammage will be done Im
> thinking that under normal
> > running conditions, the headroom will not be a
> problem Im also thinking
> > that its not a good idea to run a psu at max, but
> then again i realise 3.4
> > is a little excessive for this applicaiton.
>
> Especially for higher currents I would advise
> against using flat cables with
> IDC headers.
> (P.S. what means "IDC" ).
>
> Best wishes
> Dieter Doepfer
>
>

=====
Bakis Sirros
Parallel Worlds / Polariton
Athens-Greece
1 group owner
http://www.rubber.gr
http://www.ward12.com

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