Thanks Dieter, I think this is what I'll do. So am I right in thinking that if a module does not need +5v then it would be okay to connect it to a modified bus board (ie. there is no connection between the module and +9v) I assume that would be the case, so I guess you don't need to answer that! Also such a modified AD5 (an AD9 if you like) would be useful for the digital oscillator would it not Is this how you would implement the 9v supply

Thanks

Charlie

hardware@... wrote: If you replace the 7805 by an 7809 on the A-100AD5 adapter you obtain +9V
(or 7808 for +8V). If you plug such a modified A-100AD5 to the A-100 bus
board you have +9/+8V available instead of +5V.

But pay attention not to connect modules that require +5V (e.g. A-190,
A-191, A-113) to a bus board with such a modified A-100AD5. The modules will
be destroyed !

Best wishes
Dieter Doepfer

> -----Ursprüngliche Nachricht-----
> Von: Doepfer_a100@yahoogroups.com
> [mailto: Doepfer_a100@yahoogroups.com ]Im Auftrag von Julian
> Gesendet: Sonntag, 15. Oktober 2006 15:55
> An: Doepfer_a100@yahoogroups.com
> Betreff: RE: 1 power supply adaptation
>
>
> What about just finding a 9v regulator, and cutting down the 12v
> supply that
> way for the modules that need only 9v
> Thats all the doepfer 5v adapter does...
>
> You would probably need to do it on a per-module basis thoug -
> the bus has a
> rail reserved for 5v, but obviously not a couple for +/-9v. If you only
> needed +9v though, and you were not using the 5v rail, then i guess you
> could use the reserved 5v system for 9v insted.
>
> Julian
>
>
>
> [Non-text portions of this message have been removed]
>
>
>
>
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