Re: Powering an In-wall Amp

[Byron Hynes <bph@xxxxxxxxxxxxx>]

So, realistically, could I run 12V DC (or so) through my 2500 sq ft house
to get rid of some wall warts? (Possibly driving it off a solar panel/battery,
for that matter).

> In article <o9ydncNa9chJPb_Z4p2dnA@xxxxxxx>,
> ROBERT_GREEN1963@xxxxxxxxx (Robert Green) writes:
>
> | Might work, might not.  The voltage may drop too much after a long
> cable run
> | to be useful (which is why AC and not DC is running throughout most
> of the
> | world's homes - AC voltage doesn't drop the way DC does with long
> wire
> | runs).
> To a first approximation (good for anything you might be doing in a
> home with 50/60Hz AC and DC power distribution) AC voltage "drops"
> exactly the way DC does with long wire runs.  For power transmission
> on the level of grid interconnects the losses with DC are sufficiently
> _less_ than with AC that it becomes economical to use DC even after
> you factor in the cost and losses of conversion equipment on each end.
>
> Dan Lanciani
> ddl@danlan.*com