Recent content by SciGuy

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    Might these be dimmable on an appropriate dimmer?

    Dave, thanks so much for the time and effort! It appears that my quest isn't over yet .
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    Might these be dimmable on an appropriate dimmer?

    Hi Dave, They're USTELLAR model UT88861 and 80 watts each. They're sold as outdoor units but I've used incandescent halogen flood lights for this specific use case in the past with good success except for the short life of the bulbs as well as high energy use. These are sold on Amazon and in...
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    Might these be dimmable on an appropriate dimmer?

    I'm wondering if the attached LED flood lamps might be dimmable using an appropriate LED rated dimmer. Their intended use would be for lighting the kitchen area within a 46' geodesic dome house. They would be mounted at a height of ~ 12'. Past lighting solutions seemed to burn out rather...
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    Looking to improve illumination from hanging lights

    They are LED bulbs. 6 X 550 = 3300lm for 36 watts so much better than halogen and they look of so cool dimmed down too. Antique LED Bulbs, 6W ST64 Dimmable Vintage Edison LED Bulbs, 60W Incandescent Equivalent, Squirrel Cage Filament with 360° Beam Angle, Soft Warm White 2700K, 550 Lumens...
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    Looking to improve illumination from hanging lights

    We went with two six LED bulb X 6 watt wagon spoke units and are thrilled with the illumination and appearance. Thanks for all the input. Hugh
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    Looking to improve illumination from hanging lights

    They're 40 watt incandescent bulbs. Between the age of my eyes and the size of the inscription I'm unable to discern the base designation if it's given. [/IMG] One problem is that the globe that surrounds the two bulbs is tinted. I'd just as soon go with a whole new setup if I found something...
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    Looking to improve illumination from hanging lights

    I've recently moved into a cabin built in the 1980s where the main illumination for the high sloped ceiling living room comes from two very dim hanging lamps. Each of these contain two small candle shaped incandescent bulbs. The glass globes surrounding the bulbs are tinted as if they were...
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    Need advice regarding suitable transformer to drive several LED MR-16 bulbs

    electronupdate Thanks for the direct link as well as word of your experience. I was a bit taken aback by the cost but if this is one of those places where you get what you pay for it's probably worth it. Hugh
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    Need advice regarding suitable transformer to drive several LED MR-16 bulbs

    Thanks semiman, Just to be clear, I'm looking for a specific transformer known to work with 50 or 60 watts of MR-16 LED lamps as apposed to the halogen ones they're replacing. Something like " I've used XXX transformer and it works fine fine with 6 Philips MR-16 LED bulbs when using dimmer...
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    Need advice regarding suitable transformer to drive several LED MR-16 bulbs

    We would like to upgrade the MR-16 Halogen based cable lighting system used in part of our house to use the new 10 watt Philips LED MR-16s or something similar. We have a 5 and 6 bulb string so we're looking for an appropriate transformer to provide an appropriate wattage for either string. The...
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    Looking for bezels or other ways to mount LEDs for stair illumination

    In order to increase night time safety, I'd like to mount a series of LEDs to illuminate the stair treads in our home. It won't take much light so we're probably talking about low wattage 5mm LEDs. I'm having trouble finding specific bezels/mounts to inset LEDS into the wood of vertical portion...
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    Hands on with the Philips 75 Watt equivalent LED bulb

    It certainly looks like it's way better than a polished aluminum surface but since it still "looks significantly metallically reflective" it probably isn't too terribly high an emissivity. Perhaps it has a super coating of some sort that emits infrared extremely well. Hugh
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    Hands on with the Philips 75 Watt equivalent LED bulb

    I'd have reservations in regards to your temperature measurements with the infrared thermometer. The silver heat sink will certainly have a lower emissivity than the .95 that most infrared thermometers are set for so the actual temperature of the metal parts is probably even higher than...
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    Seeking advice on sizing aluminum U-channel as heat exchanger for Cree XM-L leds

    I haven't run them yet............. still debating how hard to drive them so appropriate power supplies can be ordered. Once i do run them I'll post temp data. Hugh
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    MR16 Bulbs - use 12V AC or DC?

    There may be a problem with that transformer. When I look at page 2 of the PDF for the Lightechinc 60 watt unit, they show a maximum of 2 meters from the transformer to the LED. I'm in the same boat as you or even more so with an already existing Halogen cable system we'd love to upgrade to LED...
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