Post by thread:[OT] Are there any good residential LED ceiling fl

At 04:37 PM 06/01/2012, you wrote: >We're in the midst of remodeling our kitchen. We >are going to be installing a number of recessed >flood lamps into the ceiling in place of the >ghastly flourescent fixture that is there now. I >see some LED floods are now available in the >big-box home improvement stores…anybody know if >they're any good? Should I just install >old-school incandescents and wait for the LED bulbs to improve? > >Thanks. > >-Pete How bright do you like it? Most of the LED lights I've seen have ghastly low brightness levels compared to the 1000+ lumens available from a good halogen incandescent. What about metal halide flood lamps? They require a ballast, but deliver a lot of lumens per watt, and a lot of lumens * hours of lamp life per dollar of bulb cost. If you allow access panels for the ballasts (and you should, they will eventually require replacement) you could convert to LEDs down the road a bit when they become higher in performace, if that makes sense. Of course the light color may also be an issue in a kitchen. Best regards,

Ah, thanks! One of the problems I'm dealing with is the space the lamps are going up into is a closed box. Overheating is a concern which LED lamps would resolve. Now to research prices, CRI, lumens, etc… -Pete On Jan 11, 2012, at 2:30 PM, RussellMc wrote: > GE's LED replacement lamp range. > Quality is liable to be "more dependable than some" > > > www.gelighting.com/na/business_lighting/products/led-replacement-site/products/index.html > > eg PAR38. Amazing range > > www.gelighting.com/na/business_lighting/products/led-replacement-site/products/led-par38.html > -

If you are happy to roll your own and the lamps are not visible you can probably do quite well in performance per $. Buy only brand name IC from the big 5 or so or solid licencees. LED like temperature to be low for lifetime. Much available on this. It's not rocket science, but there are pitfalls. I can probably tell you as much as you want to know about DIY but will not do so unless wanted. Rushing ... Russell On 14 January 2012 20:54, Peter Loron <spam_OUTpeterlTakeThisOuTstandingwave.org> wrote: {Quote hidden}> Ah, thanks! One of the problems I'm dealing with is the space the lamps > are going up into is a closed box. Overheating is a concern which LED lamps > would resolve. > > Now to research prices, CRI, lumens, etc… > > -Pete > > On Jan 11, 2012, at 2:30 PM, RussellMc wrote: > > > GE's LED replacement lamp range. > > Quality is liable to be "more dependable than some" > > > > > > > www.gelighting.com/na/business_lighting/products/led-replacement-site/products/index.html > > > > eg PAR38. Amazing range > > > > > www.gelighting.com/na/business_lighting/products/led-replacement-site/products/led-par38.html > > --

On Sat, Jan 14, 2012 at 5:04 AM, RussellMc <.....apptechnzKILLspam@spam@gmail.com> wrote: > If you are happy to roll your own and the lamps are not visible you can > probably do quite well in performance per $. > > Buy only brand name IC from the big 5 or so or solid licencees. LED like > temperature to be low for lifetime. Much available on this. > > It's not rocket science, but there are pitfalls. I can probably tell you as > much as you want to know about DIY but will not do so unless wanted. > Rushing ... Are you implying roll your own AC powered LED lights? That would be fun. Maybe use this part: http://www.powerint.com/sites/default/files/product-docs/linkswitch-ph_family_datasheet.pdf See Figure 7: Schematic of an Isolated, TRIAC Dimmable, High Power Factor, Universal Input, 14 W LED Driver. We're starting to get a bit complicated regarding the number of components in that schematic. It says the dimming range is 1000:1 which seems like it would be comparable to incandescent lamps. Dimmable CFLs are an expensive joke in my experience. -- Martin K

I'd love to get a LED brain dump from you Russell, but I'm not up for rolling my own lamps at this time. Too many other high-priority things like painting the ceiling, tile work in the bathroom… :-) I found a FEIT Electric PAR30 lamp at Costco for $30. It's 650 lumens using 6 Cree LEDs and taking 13.5W. Not sure about the CRI, but the color temp is around 3000K. Looks pretty nice in the kitchen and compares very well with the el-cheapo BR30 65W incandescents we have in there now in the other ceiling cans. Here's the same lamp at Amazon… http://www.amazon.com/Feit-Electric-13PAR30L-LED-Performance/dp/B005EHHFIE $30 is still steep compared to the incandescent bulbs…not sure if I'm going to pull the trigger on them or wait until later this year to see what happens as the home LED lighting juggernaut spins up to speed… -Pete On Jan 14, 2012, at 2:04 AM, RussellMc wrote: {Quote hidden}> If you are happy to roll your own and the lamps are not visible you can > probably do quite well in performance per $. > > Buy only brand name IC from the big 5 or so or solid licencees. LED like > temperature to be low for lifetime. Much available on this. > > It's not rocket science, but there are pitfalls. I can probably tell you as > much as you want to know about DIY but will not do so unless wanted. > Rushing ... > > > > Russell > > > On 14 January 2012 20:54, Peter Loron <peterlKILLspamstandingwave.org> wrote: > >> Ah, thanks! One of the problems I'm dealing with is the space the lamps >> are going up into is a closed box. Overheating is a concern which LED lamps >> would resolve. >> >> Now to research prices, CRI, lumens, etc… >> >> -Pete >> >> On Jan 11, 2012, at 2:30 PM, RussellMc wrote: >> >>> GE's LED replacement lamp range. >>> Quality is liable to be "more dependable than some" >>> >>> >>> >> www.gelighting.com/na/business_lighting/products/led-replacement-site/products/index.html >>> >>> eg PAR38. Amazing range >>> >>> >> www.gelighting.com/na/business_lighting/products/led-replacement-site/products/led-par38.html >>> --