Re: Powering an In-wall Amp

[ddl@danlan.*com (Dan Lanciani)]

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