Originally posted by rick1
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Bulbs,, LED or SMD bulbs for in the home?
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Originally posted by rick1 View PostWhat about the Philips A19 lamp ? uses 10W, 25,000 hours, 940 Lumens, 2700K, 120 Volt, dimable. $15.00 each from my POCO Ameren.[SIGPIC][/SIGPIC]Comment
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Originally posted by russ View PostExpensive for less light than a T-5 tube which is available in a range of CRI and color temps as well as being dimmable - at least mine are.Best solar day 80 kwh. Online solar 4/10/2012.Comment
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Originally posted by russ View PostSo are mine - I used dimmable for the light pools - hardly a big dealBest solar day 80 kwh. Online solar 4/10/2012.Comment
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Originally posted by rick1 View PostBut yours will not fit in an Edison socket. The rest of us would have to spend a lot of money to retrofit our lighting devices to your style.[SIGPIC][/SIGPIC]Comment
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Originally posted by SunEagle View PostNo question the new T5 lamps are a step above most other lighting and is leading the field in office lighting. I would recommend them for any new lighting installation.
There are LED lamps that do a pretty good job. Their output is about 80 lumens per watt and they look just like the T5 lamp in size and shape. They do put out enough light for me. The difference is that they run off of 120 volts and don't need any ballast to work.
I currently have (3) four foot LED lamps at 18 watts each and (5) two foot LED lamps at about 10 watts each. I used the exact same fluorescent fixtures that were already mounted in my closets, laundry room and garage. I just rewired them to power the LED lamps at 120 volts. While the lamps were more expensive than a T5 they are low wattage and have a 50,000 hour life (which may be exaggerated) but I saved the cost of not having to purchase new fixtures to house the T5 lamps so I think I am ahead at this point. Time will tell if I made a good or bad investmentComment
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Originally posted by choyak View PostI have a few 4 foot LED lamps, you need to install the power supply and replace the ballast completely. I conjecture that the power supply is not required anymore on the newest 4 foot LED lamps.Comment
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Originally posted by choyak View PostI conjecture that the power supply is not required anymore on the newest 4 foot LED lamps.MSEE, PEComment
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Originally posted by SunEagle View PostSome of the 4 foot LED lamps run directly off 120volts. You can use your existing fixture, remove the ballast and re-wire the end connectors directly to the 120volt power. I have 3 of those lamps and 5 of the 2 footers. They put out a lot of light and are about 1/3 the wattage.SunnyBoy 3000 US, 18 BP Solar 175B panels.Comment
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Originally posted by inetdog View PostThe key point is that these 120 volt lamps, like CFLs designed for replacement of incandescent screw base, contain their own driver circuitry. When you do not need to have a vacuum envelope, there is plenty of room inside the tube area to include the drivers.
Besides the 2 & 4 foot lamps, I also have 3 tiny screw base 2 watt LED lamps for some pendant fixtures over my counter top. They put out the light of a 25 watt incandescent. The really nice part is that they are always cool to the touch.Comment
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