AM band? Does that come with radios anymore? : )
Bob Heller
3M EMC Laboratory, 76-1-01
St. Paul, MN 55107-1208
Tel: 651- 778-6336
Fax: 651-778-6252
=========================
"Pettit, Ghery"
<ghery.pettit@int
el.com> To
Sent by: <[email protected]>
[email protected] <[email protected]>
cc
10/19/2007 10:31 Subject
AM RE: OT: LEDs replacing general
lighting streetlamps
If they are like the LED traffic lights in Olympia, WA, they are
NOISEY!!! Especially in the AM broadcast band.
Ghery Pettit
From: [email protected] [mailto:[email protected]] On Behalf Of
[email protected]
Sent: Friday, October 19, 2007 8:23 AM
To: [email protected]
Subject: Re: OT: LEDs replacing general lighting streetlamps
How are LED lamps driven (in this application)? I though switch-mode
regulators were used.
If so, I wonder what the potential for EMI will be?
I guess it can't get much worse, now that Broadband over Power Lines
(BPL)
is used in the U.S.
Pat Lawler
EMC/Reliability Engineer
SL Power Electronics Corp.
[email protected] wrote on 10/19/2007 08:01:28 AM:
> ... at least, in downtown Ann Arbor Michigan.
> General lighting applications have been a long sought application for
> the LED industry and, while they may not make for a good reading lamp,
> I'll be interested in seeing how this trial goes (and how many
> bandwagoners jump on-board, before the two-year trial's results are
> out). The article states that ROI is at break-even after four years
for
> 10 year projected lifetime for the lamps.
> http://www.foxnews.com/story/0,2933,303258,00.html
>
> Regards,
> Peter L. Tarver, PE
> [email protected]
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