On Fri, 20 Nov 2009 20:35:47 -0600, "Pete C."
wrote:


wrote:

On Fri, 20 Nov 2009 14:36:32 -0500, "Josepi" wrote:

Not according to testing labs that have made lumen mesurements. Are you
including the inverters or other lossy type gadgets to accomodate different
types of bulbs?

No inverters or "lossy gadgets" involved, other than what is built
into the base of the lamps. The draw measured includes any and all
parts of the assembly.

Have you actually measured the "equivalent" light output or
does it just look about the same?

Measured. Nav lights have to meet strict legal requirements and be
certified.

Brilliance is a logarithmic scale and can
be very deceiving to the human eye.


You really can't stand being wrong, can you?

Trouble with the lab measurements is they are not usually dated when
completed and the technology advances quite rapidly.


Sorry that you have such a hard time with reality.

LEDs are considerably more efficient than ordinary incandescents, but
they are still less efficient than CFLs. Many of the fixtures you'd be
using on a boat benefit from the directionality of LEDs, which is
another reason they perform better.

Tell that to my 360 degree LED anchor light at the top of the mast
which is brighter and can be seen farther than the incandescent it
replaced, and uses 1/10th the power.

All nav lights have to cover specified arcs of visibility. The
directional nature of LED's is actually a disadvantage for boats that
had to be overcome, which is done by using arrays of smaller LED's

They now have LED's that produce as much as 200 lumens per watt.

Compare that to a CFL. :-)