BT>   I hate to be the troublemaker sitting in the back of the room, but 
 BT> in theory shouldn't a DC transmission line 
 BT> operating at the same voltage as an AC line have 
 BT> the same efficiency? Yeah, yeah, I know that 
 BT> plugging my 117vac TV set into a 250,000vac line 
 BT> would be nothing but trouble. But I'm talking about 
 BT> theory. I wholeheartedly endorse stepdown 
 BT> transformers
 
   Yes it would. But like you say, without being able to step it down, it 
can't help the user very much. (Now if we had cheap, room temprature 
superconductors, long distance transmission of low-voltage DC might be 
thinkable....)
 
   Frank
 
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