On 17 Jun 2005, at 21:11, <[EMAIL PROTECTED]> wrote:

Curious about that one myself ... I thought all Macs of that era had
different analogue boards for US and International. I think the
international version is the only one with a convertible 120/240 power
supply via the jumper Stuart references. I'm not sure why he runs it at
110v, except that the power transformer and related parts (caps, resistors and rectifiers) don't have to work as hard to step down the higher voltage
(though they are certainly rated for it), so for those parts I guess it
would extend the life and durability with a net effect of creating less heat inside the case too (less energy to dissipate), thereby reducing the stress
on all the other components.


Now you mention two a/bs, my 128Kb Mac, which I bought in the States, probably isn't switchable in any case!

Stuart


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