On Fri, 29 May 2009 01:18:39 +0000, Larry wrote:

wrote in :

On Thu, 28 May 2009 08:14:11 +0200, "Meindert Sprang"
wrote:

"Larry" wrote in message
...
Yeah, but what these cheapskates will pay for doesn't even have a
.01 cap across the power bus.....

Not to mention a decent common mode filter at both ends....

Meindert


Umm... We are talking about point-of-use power supplies. One at each
LED fixture. It must be physically tiny, and not add exponentially to
the cost of the lamp. Noise is a COMMON issue with LED lighting on
boats.



The noise comes because the lighting is hooked to a big antenna system
called "boat wiring" in a plastic box that can't be shielded or
grounded...unfortunately.

There have also been problems confirmed where the switch mode
regulators in some rather expensive LED anchor lights were radiating
directly into the VHF antenna.