[sdiy] need PCB layout for a +/-9V DC supply

[Danjel van Tijn]

Hi there,
  I am just getting into synth design. I have completed a few small projects 
(latetst was a 303 called the x0xb0x) and now I am making my own version of 
the Sound Lab Mini-Synth.
 For this project I need a +/- 9V DC supply. I have no experience making 
PCBs (but I have just bought the chemicals and equipment to do so) and would 
prefer to use a PCB layout that has been tried and tested.
 One option is to use http://www.cgs.synth.net/modules/cgs14_psu.html PCB 
for a +/-15 VDC supply and replace the regulators with 7809 and 7909s. I 
could then hook up a 24V CT transformer to it.
 I assume it is a good idea to build an external power supply... should the 
transformer and the power supply circuit all be in one small box? Is there a 
wallwart style transformer I could get that has a center tap? (instead of 
mounting the transformer in the power supply box). Is an XLR cable a good 
way to connect +9, 0 and -9 to the synth?
  any help is greatly appreciated! I am just a beginner but I plan to learn 
as much as I can and increase the complexitiy of my designs.
 cheers,
 Danjel [VANCOUVER}
  www.intellijel.com <http://www.intellijel.com>
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