[sdiy] Power distribution board

[Laurie Biddulph]

As per my earlier email, the splitting of the resistance is the most logical 
reason I can think of. With that in mind it is recommended that you use all 
4 wires but I see no reason why 3 wouldn't work. Can't see that the 
miniscule cost saving of dropping 1 wire and 2 crimps is worth the fuss 
though.

Best Regards

(Mr) Laurie Biddulph
Phone: +61 (0)2 4340 0938
Mobile: 0400 257 645

Elby Designs
ABN: 70 022 727 605
http://www.elby-designs.com

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----- Original Message ----- 
From: "David G. Dixon" <dixon at interchange.ubc.ca>
To: "'Laurie Biddulph'" <elby_designs at ozemail.com.au>; 
<synth-diy at dropmix.xs4all.nl>
Sent: Sunday, April 05, 2009 3:21 AM
Subject: RE: [sdiy] Power distribution board


> So, given that the two ground pins are basically wired together at each 
> MOTM
> module, is each pin typically wired up to the distribution board 
> (presumably
> to provide half the resistance of the rail cables), or to most people 
> simply
> not bother?
>
>> -----Original Message-----
>> From: Laurie Biddulph [mailto:elby_designs at ozemail.com.au]
>> Sent: Friday, April 03, 2009 11:32 PM
>> To: David G. Dixon; synth-diy at dropmix.xs4all.nl
>> Subject: Re: [sdiy] Power distribution board
>>
>> Don't know the rational behind the MOTM connectors having 2 grounds which
>> are the same but I do know that Oakley Modular systems do actually
>> maintain
>> these as sperate grounds with one being assigned to the panel ground and
>> the
>> other to the actual power ground. This only works if there are no other
>> non-Oakley modules in the system (unless they also have split grounds).
>>
>> It is good practise for the ground tracks to be beefier than the power
>> tracks and maybe the MORM system uses this reason. Also there is some
>> logic
>> between considering them as 2 separate supplies, a +ve supply with ground
>> and a -Ve supply with ground with the grounds commoned together at some
>> point.
>
>