On Thu, 6 Oct 2011 02:35:59 +1300, Chris Bannister 
<mockingb...@earthlight.co.nz> wrote:
>
> For crossing "large" distances DC is used, whereas AC is more useful for
> local distribution.
>

    I thought, that DC is better for transmission (less losses). And higher 
voltage 
is also better (less losses). And AC won, because of one device: 
direct current transformer ;) 

-- 
Virgo Pärna 
virgo.pa...@mail.ee


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