Ian Lynch wrote:
On Tue, 2008-05-27 at 13:14 -0500, Robert Derman wrote:
Farmers are smart, they've been putting 100 turns of #6 copper under power
lines for years, free power for the farm. Until it burns down.
This is why a lot of the high power transmission lines now use direct
current rather than alternating current. There was just too much
induction loss.
Snag with transformers then? I would have thought the additional cost of
stepping up and down voltage would have made it uneconomic for general
use but then again technology changes so maybe I'm just out of date :-).
Ian
Solid state oscillators turn it back to AC at its destination so that
transformers can step the voltage down. The cost of doing this is far
less than the value of the energy lost by AC losses.
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