Posted by clare on August 12, 2009, 1:58 am
On Tue, 11 Aug 2009 04:09:02 -0700, Archimedes' Lever
They went to advertizing amperage on vacuum cleaners after they were
called to the carpet for using inflated "air horsepower" ratings for
years. You could buy a "4 hp" vacuum cleaner that drew 10 amps on a
115 volt circuit. By any accepted way of calculating, that machine
could not produce more than roughly 1.4 HP.
Same thing with air compressors.
Because of litigation expense, and having to proove their device put
out the power they advertised, they went to rating the machinery by
amperage drawn at full load - which could be measured, was more
difficult to "fudge" and easier to prove in a court of law.
Posted by Son of a Sea Cook on August 12, 2009, 3:18 am
On Tue, 11 Aug 2009 21:58:51 -0400, firstname.lastname@example.org wrote:
Car stereo audio power output declarations had similar problems.
Posted by harry on August 12, 2009, 6:11 pm
On Aug 12, 4:18 am, Son of a Sea Cook
Your ears are remarkable sensitive. At a range of three feet two watts
of sound would be deafening. A quarter of a watt is fine. It neeeds
more power for lower frequencies.
It beats me why peole are conned into buying fifty watt amplifiers
when they only use the first ten.
Posted by Davej on August 12, 2009, 2:34 am
Stop cross-posting this crap.
Posted by Archimedes' Lever on August 13, 2009, 7:38 am
We have a winner.