On Wed, 27 May 2009 08:57:01 +0200, "Meindert Sprang"
wrote:

wrote in message
.. .

Unfortunately, switch mode regulators often introduce noise that
affects other more important things on a boat.

A well-designed SMPS does not introduce noise. But it will increase cost of
course.....

Meindert


Tiny point of use switch mode power supplies, as used for LED
lighting, are often noisy. More often than not.