Re: Long Live the Incandescent!

[Marc_F_Hult <MFHult@xxxxxxxxxxxxxxxxxxxxx>]

On Wed, 15 Jul 2009 09:14:39 -0700, Steve Fenwick <nospam@xxxxxxxxxxxxxx>
wrote in message  <nospam-4EE939.09143915072009@xxxxxxxxxxxxxxxxxxxxxxxxxx>:

>In article <npor555p2m248jkv6la6mq9r74sme1e0mb@xxxxxxx>,
> Marc_F_Hult <MFHult@xxxxxxxxxxxxxxxxxxxxx> wrote:
>> I have a pair of dimmable LEDs
>> intended for ceiling cans in the kitchen which I can place on the same
>> circuit as halogen incandescents and CFLs in which they perform admirably.
>> Like CFLs, and unlike incandescents, they are not 'infinitely' dimmable,
>> i.e, they have an abrupt shut-off at about four to five f-stops below full
>> brightness.
>
>Vendor, manufacturer, model numbers?
>
>Thanks!
>
>Steve


Mine are Cree LED Recessed Lighting Luminaire LR6C 6" Downlight Module and
are "Neutral Color 3500K" which provides daylight, i.e., cooler than
incandescent light..  As I recall, Cree also sells a warmer, 3200K version.

GooBing  " Cree LR6C " for FAQ, vendors and manufacturer site.

They are expensive -- ~ U$87

Among the claims on the LR6C box are:

	1) "Designed to last 50,000 hours"
	2) ' uses 85% less energy than conventional bulbs and 50% less
		than CFLs"

Note that CFLs and LEDs do not intrinsically put out warmer light when dimmed
as do incandescent lamps. I suspect that some bright manufacturer will
realize that part of the attraction of dimming incandescents is the resulting
reduction in color temperature. One can, of course create most any color with
a RGB or RGBY LED lamp using multi-channel DMX-512 (DMX512a) control.

I note that one web site cites specs of "dimming to 25%".  I'll remeasure.

HTH ... Marc
Marc_F_Hult
www.ECOntrol.org