Noticed this on amazon, and it seems to be good.<div><a href="http://www.amazon.com/dp/B004AHPHAM/ref=pe_113430_22293050_pd_re_dt_dt1">http://www.amazon.com/dp/B004AHPHAM/ref=pe_113430_22293050_pd_re_dt_dt1</a></div><div>Looks like a good charger for rechargeables too. It has an indicator light for each battery--something surprisingly hard to find these days.<br>
Ben</div><div><br></div><div><div class="gmail_quote">On Wed, Jan 4, 2012 at 11:42 PM, Jason Holstine <span dir="ltr"><<a href="mailto:jason@amicusgreen.com">jason@amicusgreen.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div>
<font face="Calibri, Verdana, Helvetica, Arial"><span style="font-size:11pt">Lynelle,<br>
<br>
There are some decent GU10 LED bulbs that we’ve come across and a couple of them are pretty popular. We’re waiting samples of a new line that is also made in Tampa, Florida, USA, instead of China (a nice bonus). <br>
<br>
These guys will typically cost about $29/ea. But my late-night-back-of-the-envelope comes to 3.096 kwh of savings over a 12 hour period (slashing from 50W to 7W = 43 watts saved x 6 units x 12 hours). So at US$0.12/kwh = $.371 saved per day or $11.14 saved per 30 day month. So that’s about a 15 month payback. Someone with a more alert brain may need to back up my math. <br>
<br>
These LED units will get warmer than other LEDs but nothing compared to a halogen.<br>
<br>
One caution: GU10 fixtures all are wired for halogens and all that extra load. We’ve run into conversion problems b/c the transformer may require a load that would be much greater than what the LEDs will pull. As in wanting 700 watts but you’re only pulling 70 watts—not even close. If you want to dim them it becomes really tricky. If you don’t need to dim, it’s much easier. But see if you can find out if there’s a documented minimum load the transformer calls for.<br>
<br>
<br>
</span></font><font size="1"><font face="Verdana, Helvetica, Arial"><span style="font-size:9pt"><b>Jason Holstine<br>
</b></span><span style="font-size:7pt"><img src="cid:3408568924_127217286"><br>
Amicus Green Building Center<br>
“Sustain Your Space”<br>
Member - USGBC, GreenAmerica, NARI, NAHB<br>
e: <a href="http://jason@amicusgreen.com" target="_blank">jason@amicusgreen.com</a><br>
w: <a href="http://www.amicusgreen.com" target="_blank">www.amicusgreen.com</a><br>
p: <a href="tel:301-571-8590" value="+13015718590" target="_blank">301-571-8590</a><br>
tf: <a href="tel:866-587-9140" value="+18665879140" target="_blank">866-587-9140</a><br>
f: <a href="tel:301-571-8597" value="+13015718597" target="_blank">301-571-8597</a><br>
</span></font></font><div><div class="h5"><font face="Calibri, Verdana, Helvetica, Arial"><span style="font-size:11pt"><br>
<br>
<br>
On 1/4/12 8:45 PM, "Lynelle Hamilton" <<a href="http://lynelle@kos.net" target="_blank">lynelle@kos.net</a>> wrote:<br>
<br>
</span></font><blockquote><font><font face="Consolas, Courier New, Courier"><span style="font-size:10pt">Does anyone have info on LED GU10 replacement bulbs? I have a (egad) <br>
Halogen light in my DR. Because it's also workspace, it's on 10-12 <br>
hours/day on cloudy days. Thing uses 6 50W GU10s. I suppose the bulb <br>
heat contributes to the ambient warmth, but my masonry heater does a <br>
much better job, so this isn't a redeeming feature.<br>
<br>
Yet, I'm loathe to invest $180 into 6 LED GU10s (at 35W per) without <br>
some idea of how they actually compare.<br>
<br>
Has anyone used these or similar?<br>
<br>
Thanks!<br>
<br>
Lynelle<br>
<br>
On 04/01/2012 1:02 PM, David Bergman wrote:<br>
> Hi Benjamin,<br>
><br>
> My first question would be: how often is the fixture turned on? If it <br>
> is just an occasional use, then it may not be so important to change <br>
> it to energy-efficient bulbs. Plus your payback period will be much <br>
> longer.<br>
><br>
> If the fixture is one that is on for longer or more frequent periods, <br>
> then you're right to seek an alternative. There are some candelabra <br>
> socket CFL's out there, but yes, they mayy be bigger and they probably <br>
> will not be dimmable. Also be aware that, if you are currently using <br>
> clear incandescent bulbs, a CFL will look different -- more like a <br>
> frosted incandescent.<br>
><br>
> There are LED candelabra bulbs available, and some are available in <br>
> warm color temperatures (to answer Reuben's point). Also, not all LEDs <br>
> are dimmable. But the real issue is that the brightness is lower. As <br>
> far as I have seen, the maximum brightness models currently available <br>
> are equivalent to around a 15 or 20 watt incandescent.<br>
><br>
> If the light is on only occasionally, and especially if you dim it, <br>
> you may be better off -- at least for now --sticking with the tungsten <br>
> bulbs.<br>
><br>
> David<br>
> David Bergman RA LEED AP<br>
> *DAVID BERGMAN* ARCHITECT / *FIRE & WATER* LIGHTING + FURNITURE<br>
> architecture . interiors . ecodesign. lighting . furniture<br>
> <a href="http://bergman@cyberg.com" target="_blank">bergman@cyberg.com</a> _www.cyberg.com_ <<a href="http://www.cyberg.com/%3E__" target="_blank">http://www.cyberg.com/>__</a><br>
> 241 Eldridge Street #3R, New York, NY 10002<br>
> t <a href="tel:212%20475%203106" value="+12124753106" target="_blank">212 475 3106</a> f <a href="tel:212%20677%207291" value="+12126777291" target="_blank">212 677 7291</a><br>
><br>
> At 12:06 PM 1/4/2012, Benjamin Pratt wrote:<br>
>> The light that is most often on in my house is a 5 bulb fixture in the<br>
>> dining room (burning 40 watt mini-base tungsten presently). This is<br>
>> the one fixture in the house that does not have CFLs in it. My wife<br>
>> likes the warm look of tungsten, especially in this location, and i<br>
>> have been unable to convince her to switch to CFLs. Also, they are<br>
>> larger in size , and the shades that clip on each bulb may not fit.<br>
>> The ideal bulb would be the same size as the tungsten bulbs, dimmable,<br>
>> and a warm color. This may be a good opportunity to switch to LED's,<br>
>> Any recommendations as to what bulbs to get and where to get them?<br>
>> thanks!<br>
>><br>
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</div><br><br clear="all"><div><br></div>-- <br><br><br>b e n j a m i n p r a t t<br> <br>professor art+design<br>the university of wisconsin stout<br>
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