<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META content="text/html; charset=iso-8859-1" http-equiv=Content-Type>
<META name=GENERATOR content="MSHTML 8.00.6001.19170"></HEAD>
<BODY bgColor=#ffffff>
<DIV><FONT size=2 face=Arial>LED teardown at <A
href="http://www.edn.com/blog/PowerSource/41611-Samsung_LED_light_bulb_teardown_includes_objective_dimming_numbers.php?cid=EDNToday_20120210">http://www.edn.com/blog/PowerSource/41611-Samsung_LED_light_bulb_teardown_includes_objective_dimming_numbers.php?cid=EDNToday_20120210</A></FONT></DIV>
<DIV> </DIV>
<BLOCKQUOTE
style="BORDER-LEFT: #000000 2px solid; PADDING-LEFT: 5px; PADDING-RIGHT: 0px; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="FONT: 10pt arial; BACKGROUND: #e4e4e4; font-color: black"><B>From:</B>
<A title=dahlsolar@gmail.com href="mailto:dahlsolar@gmail.com">Jesse Dahl</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=re-wrenches@lists.re-wrenches.org
href="mailto:re-wrenches@lists.re-wrenches.org">RE-wrenches</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Friday, February 10, 2012 5:32
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [RE-wrenches] 110Vac LED
resistance to weak grids in developingworld</DIV>
<DIV><BR></DIV>
<DIV>I don't know about spikes or grid events, but my home is 3/4 LED and have
zero complaints. The warranty on them is a little weak compared to life
cycle...... All of mine vary in K rating and lumens and work
beautifully. </DIV>
<DIV><BR></DIV>
<DIV><BR></DIV>
<DIV><BR>Sent from my iPhone</DIV>
<DIV><BR>On Feb 9, 2012, at 7:45 PM, Ray Walters <<A
href="mailto:ray@solarray.com">ray@solarray.com</A>> wrote:<BR><BR></DIV>
<DIV></DIV>
<BLOCKQUOTE type="cite">
<DIV>Personally I love my latest LED lights. They have gotten
substantially better just in the past year. We have some 8 watt units
in our kitchen that illuminate just like a 35 watt halogen, beautiful color
rendition, not that blue they used to have. <BR>I especially like my
new 1000 lumen spotlight that lights up brighter than a car head light in a
package slightly larger than the old mini mag flash lights.<BR>However, I
have no experience with ham radio, or theRF interference issue. We're
WiFi, and cell at our house. I do some audio recording, etc. and
haven't noticed any extra buzz from the several LEDs I have in my basement
studio.<BR><BR>Ray<BR><BR>On 2/9/2012 4:54 PM, <A
class=moz-txt-link-abbreviated
href="mailto:toddcory@finestplanet.com">toddcory@finestplanet.com</A> wrote:
<BLOCKQUOTE cite=mid:1328831656.846621832@webmail.finestplanet.com
type="cite"><FONT size=4 face=arial>
<P
style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; FONT-FAMILY: arial; FONT-SIZE: 14pt; PADDING-TOP: 0px">i
have some personal experience with led light bulbs. i put them outside
because the cfl floodlights are very s-l-o-w to warm up to full
brightness.</P>
<P
style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; FONT-FAMILY: arial; FONT-SIZE: 14pt; PADDING-TOP: 0px"> </P>
<P
style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; FONT-FAMILY: arial; FONT-SIZE: 14pt; PADDING-TOP: 0px">1)
leds are still slightly less efficient (lumens per watt) than cfl's</P>
<P
style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; FONT-FAMILY: arial; FONT-SIZE: 14pt; PADDING-TOP: 0px">2)
led light bulbs (2 different brands) throw out an ungodly amount of rfi...
want to listen to a conversation on the 2 meter ham radio or listen to a
weak fm broadcast station or watch channel 6 on the tee-vee? go shut off
the led lights off first.</P>
<P
style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; FONT-FAMILY: arial; FONT-SIZE: 14pt; PADDING-TOP: 0px"> </P>
<P
style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; FONT-FAMILY: arial; FONT-SIZE: 14pt; PADDING-TOP: 0px">my
conclusion? led light bulbs are not ready for prime time.</P>
<P
style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; FONT-FAMILY: arial; FONT-SIZE: 14pt; PADDING-TOP: 0px"> </P>
<P
style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; FONT-FAMILY: arial; FONT-SIZE: 14pt; PADDING-TOP: 0px">todd
(still using my 25+ year old phillips dulux cfls)</P>
<P
style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; FONT-FAMILY: arial; FONT-SIZE: 14pt; PADDING-TOP: 0px"> </P>
<P
style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; FONT-FAMILY: arial; FONT-SIZE: 14pt; PADDING-TOP: 0px"> </P>
<P
style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; FONT-FAMILY: arial; FONT-SIZE: 14pt; PADDING-TOP: 0px"> </P>
<P
style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; FONT-FAMILY: arial; FONT-SIZE: 14pt; PADDING-TOP: 0px">On
Thursday, February 9, 2012 1:44pm, "Jim MacDonald" <A
class=moz-txt-link-rfc2396E
href="mailto:jmac@solaresystems.com"><jmac@solaresystems.com></A>
said:<BR><BR></P>
<DIV id=SafeStyles1328831257>
<STYLE style="FONT-FAMILY: arial; FONT-SIZE: 14pt">UNKNOWN {
FONT-FAMILY: "Cambria Math"; panose-1: 2 4 5 3 5 4 6 3 2 4
}
UNKNOWN {
FONT-FAMILY: Calibri; panose-1: 2 15 5 2 2 2 4 3 2 4
}
#SafeStyles1328831257 P.MsoNormal {
MARGIN: 0in 0in 0pt; FONT-FAMILY: "Times New Roman","serif"; FONT-SIZE: 12pt
}
#SafeStyles1328831257 LI.MsoNormal {
MARGIN: 0in 0in 0pt; FONT-FAMILY: "Times New Roman","serif"; FONT-SIZE: 12pt
}
#SafeStyles1328831257 DIV.MsoNormal {
MARGIN: 0in 0in 0pt; FONT-FAMILY: "Times New Roman","serif"; FONT-SIZE: 12pt
}
#SafeStyles1328831257 A:link {
COLOR: blue; TEXT-DECORATION: underline; mso-style-priority: 99
}
#SafeStyles1328831257 SPAN.MsoHyperlink {
COLOR: blue; TEXT-DECORATION: underline; mso-style-priority: 99
}
#SafeStyles1328831257 A:visited {
COLOR: purple; TEXT-DECORATION: underline; mso-style-priority: 99
}
#SafeStyles1328831257 SPAN.MsoHyperlinkFollowed {
COLOR: purple; TEXT-DECORATION: underline; mso-style-priority: 99
}
#SafeStyles1328831257 SPAN.EmailStyle17 {
FONT-FAMILY: "Calibri","sans-serif"; COLOR: #1f497d; mso-style-type: personal-reply
}
#SafeStyles1328831257 .MsoChpDefault {
mso-style-type: export-only
}
UNKNOWN {
MARGIN: 1in; size: 8.5in 11.0in
}
#SafeStyles1328831257 DIV.WordSection1 {
page: WordSection1
}
</STYLE>
<DIV class=WordSection1>
<P
style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; FONT-FAMILY: arial; FONT-SIZE: 14pt; PADDING-TOP: 0px"
class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt">Hello
wrenches</SPAN></P>
<P
style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; FONT-FAMILY: arial; FONT-SIZE: 14pt; PADDING-TOP: 0px"> </P>
<P
style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; FONT-FAMILY: arial; FONT-SIZE: 14pt; PADDING-TOP: 0px"
class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt">I
am in Central America and looking to suggest customers buy efficient LEDs
for illumination in their 120V-wired homes, connected to local power grids
with less-than-desirable power quality.</SPAN></P>
<P
style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; FONT-FAMILY: arial; FONT-SIZE: 14pt; PADDING-TOP: 0px"> </P>
<P
style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; FONT-FAMILY: arial; FONT-SIZE: 14pt; PADDING-TOP: 0px"
class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt">I
see that so many manus claim long life for the LEDs, in the tens of
thousands of hours, yet so few if any back it up with a decent
warranty.</SPAN></P>
<P
style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; FONT-FAMILY: arial; FONT-SIZE: 14pt; PADDING-TOP: 0px"
class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt"></SPAN></P>
<P
style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; FONT-FAMILY: arial; FONT-SIZE: 14pt; PADDING-TOP: 0px"
class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt">Folks
are hesitant to make this investment, believing that voltage surges or
dips could destroy the LEDs.</SPAN></P>
<P
style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; FONT-FAMILY: arial; FONT-SIZE: 14pt; PADDING-TOP: 0px"> </P>
<P
style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; FONT-FAMILY: arial; FONT-SIZE: 14pt; PADDING-TOP: 0px"
class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt">Has
anyone heard of LED lights' lives ending prematurely due to grid events?
</SPAN></P>
<P
style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; FONT-FAMILY: arial; FONT-SIZE: 14pt; PADDING-TOP: 0px"
class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt">Would
inline surge protectors [something small to be installed immediately
downstream of the breaker in the home's main panel) be helpful, and if so,
does anyone have any recommended brands?</SPAN></P>
<P
style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; FONT-FAMILY: arial; FONT-SIZE: 14pt; PADDING-TOP: 0px"
class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt"></SPAN></P>
<P
style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; FONT-FAMILY: arial; FONT-SIZE: 14pt; PADDING-TOP: 0px"
class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt">thanks</SPAN></P>
<P
style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; FONT-FAMILY: arial; FONT-SIZE: 14pt; PADDING-TOP: 0px"
class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt">Jim
MacDonald</SPAN></P></DIV></DIV></FONT><BR><BR><BR>Sent from Finest Planet
WebMail.<BR><BR>
<FIELDSET class=mimeAttachmentHeader></FIELDSET> <BR><PRE wrap="">_______________________________________________
List sponsored by Home Power magazine
List Address: <A class=moz-txt-link-abbreviated href="mailto:RE-wrenches@lists.re-wrenches.org">RE-wrenches@lists.re-wrenches.org</A>
Options & settings:
<A class=moz-txt-link-freetext href="http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org">http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org</A>
List-Archive: <A class=moz-txt-link-freetext href="http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org">http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org</A>
List rules & etiquette:
<A class=moz-txt-link-abbreviated href="http://www.re-wrenches.org/etiquette.htm">www.re-wrenches.org/etiquette.htm</A>
Check out participant bios:
<A class=moz-txt-link-abbreviated href="http://www.members.re-wrenches.org">www.members.re-wrenches.org</A>
</PRE></BLOCKQUOTE></DIV></BLOCKQUOTE>
<BLOCKQUOTE type="cite">
<DIV><SPAN>_______________________________________________</SPAN><BR><SPAN>List
sponsored by Home Power magazine</SPAN><BR><SPAN></SPAN><BR><SPAN>List
Address: <A
href="mailto:RE-wrenches@lists.re-wrenches.org">RE-wrenches@lists.re-wrenches.org</A></SPAN><BR><SPAN></SPAN><BR><SPAN>Options
& settings:</SPAN><BR><SPAN><A
href="http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org">http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org</A></SPAN><BR><SPAN></SPAN><BR><SPAN>List-Archive:
<A
href="http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org">http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org</A></SPAN><BR><SPAN></SPAN><BR><SPAN>List
rules & etiquette:</SPAN><BR><SPAN><A
href="http://www.re-wrenches.org/etiquette.htm">www.re-wrenches.org/etiquette.htm</A></SPAN><BR><SPAN></SPAN><BR><SPAN>Check
out participant bios:</SPAN><BR><SPAN><A
href="http://www.members.re-wrenches.org">www.members.re-wrenches.org</A></SPAN><BR><SPAN></SPAN><BR></DIV></BLOCKQUOTE>
<P>
<HR>
<P></P>_______________________________________________<BR>List sponsored by
Home Power magazine<BR><BR>List Address:
RE-wrenches@lists.re-wrenches.org<BR><BR>Options &
settings:<BR>http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org<BR><BR>List-Archive:
http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org<BR><BR>List
rules & etiquette:<BR>www.re-wrenches.org/etiquette.htm<BR><BR>Check out
participant
bios:<BR>www.members.re-wrenches.org<BR><BR></BLOCKQUOTE></BODY></HTML>