"Meindert Sprang" wrote in
:

"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




Geez, you'd think NMEA manufacturers were using balanced lines, not
grounding one of them....(c;]



--
-----
Larry

If a man goes way out into the woods all alone and says something,
is it still wrong, even though no woman hears him?

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.



--
-----
Larry

If a man goes way out into the woods all alone and says something,
is it still wrong, even though no woman hears him?

(GregS) wrote in
:

In article , Larry
wrote:
(GregS) wrote in news:gvjhnr$5a3$5
:

Would be interesting to see the specs and the switching frequency.


Every one of them switches at an evenly divisible multiple of 156.800
Mhz.....Just like Adler-Barbour damned
fridges...bzzt...bzzt...bzztbzzt....all night long....

They adjust 'em until their dead on Channel 16....


I am thinking about possible sweeping multiple subharmonics.
from multiple lights.

greg


That should clean out the whole HF/VHF spectrum....good show!



--
-----
Larry

If a man goes way out into the woods all alone and says something,
is it still wrong, even though no woman hears him?

"Larry" wrote in message
...

Geez, you'd think NMEA manufacturers were using balanced lines, not
grounding one of them....(c;]

Decent manufacturers do, in fact.

Meindert

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.