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LED bulb
I bought an LED bulb today for my frequently used reading lamp. It's
rated at equivalent to 40 watts and to last 46 years. That's about ten times what I am likely to last. The brightness is good and it comes on instantly. It can also be used with a dimmer. ---MIKE--- In the White Mountains of New Hampshire (44° 15' N - Elevation 1580') |
LED bulb
On 5/4/2011 12:19 PM, ---MIKE--- wrote:
I bought an LED bulb today for my frequently used reading lamp. It's rated at equivalent to 40 watts and to last 46 years. :-) That's about ten times what I am likely to last. :-( The brightness is good and it comes on instantly. It can also be used with a dimmer. :-) |
LED bulb
---MIKE--- wrote:
I bought an LED bulb today for my frequently used reading lamp. It's rated at equivalent to 40 watts and to last 46 years. That's about ten times what I am likely to last. The brightness is good and it comes on instantly. It can also be used with a dimmer. ---MIKE--- In the White Mountains of New Hampshire (44° 15' N - Elevation 1580') What did it cost, $50.00? -- If your doctor isn't taking new patients, he ain't curing any of them. |
LED bulb
---MIKE--- wrote the following:
I bought an LED bulb today for my frequently used reading lamp. It's rated at equivalent to 40 watts and to last 46 years. That's about ten times what I am likely to last. The brightness is good and it comes on instantly. It can also be used with a dimmer. Did you have a question? My house is loaded with CFLs. From desk lamps to living room lamps, to ceiling fixtures, to outside lamps. I started years ago when they first became available. The first ones were huge and I only used them as utility lamps in closets, basement stairwells, the attic, and the garage. ---MIKE--- In the White Mountains of New Hampshire (44° 15' N - Elevation 1580') -- Bill In Hamptonburgh, NY In the original Orange County. Est. 1683 To email, remove the double zeroes after @ |
LED bulb
On May 4, 12:19*pm, (---MIKE---) wrote:
I bought an LED bulb today for my frequently used reading lamp. *It's rated at equivalent to 40 watts and to last 46 years. *That's about ten times what I am likely to last. *The brightness is good and it comes on instantly. *It can also be used with a dimmer. * * * * * * * * * ---MIKE---In the White Mountains of New Hampshire * (44° 15' *N - Elevation 1580') Is the brightness really equivalent to a 40W incandescent? I am skeptical of that from the samples I have seen on display. |
LED bulb
On 5/4/2011 2:01 PM, hr(bob) wrote:
On May 4, 12:19 pm, (---MIKE---) wrote: I bought an LED bulb today for my frequently used reading lamp. It's rated at equivalent to 40 watts and to last 46 years. That's about ten times what I am likely to last. The brightness is good and it comes on instantly. It can also be used with a dimmer. ---MIKE---In the White Mountains of New Hampshire (44° 15' N - Elevation 1580') Is the brightness really equivalent to a 40W incandescent? I am skeptical of that from the samples I have seen on display. Googled this up at HD: http://tinyurl.com/4xx897u Starting to look interesting but my expiration date is about the same as the op's ;) |
LED bulb
"---MIKE---" wrote in message ... I bought an LED bulb today for my frequently used reading lamp. It's rated at equivalent to 40 watts and to last 46 years. That's about ten times what I am likely to last. The brightness is good and it comes on instantly. It can also be used with a dimmer. I was just talking to our electrician about those, he's been selling a lot of LED lighting lately and the only bug so far is failures apparently being caused by dirty power so to speak--spikes and surges and noise. He's looking at selling whole-house power conditioners as a result. I expect to replace our CFLs with LED within a couple of years once the price is more reasonable. |
LED bulb
willshak wrote:
---MIKE--- wrote the following: I bought an LED bulb today for my frequently used reading lamp. It's rated at equivalent to 40 watts and to last 46 years. That's about ten times what I am likely to last. The brightness is good and it comes on instantly. It can also be used with a dimmer. Did you have a question? My house is loaded with CFLs. From desk lamps to living room lamps, to ceiling fixtures, to outside lamps. I started years ago when they first became available. The first ones were huge and I only used them as utility lamps in closets, basement stairwells, the attic, and the garage. He has an LED lamp, not CFL, and is thereby protected from mercury poisoning. |
LED bulb
HeyBub wrote:
willshak wrote: ---MIKE--- wrote the following: I bought an LED bulb today for my frequently used reading lamp. It's rated at equivalent to 40 watts and to last 46 years. That's about ten times what I am likely to last. The brightness is good and it comes on instantly. It can also be used with a dimmer. Did you have a question? My house is loaded with CFLs. From desk lamps to living room lamps, to ceiling fixtures, to outside lamps. I started years ago when they first became available. The first ones were huge and I only used them as utility lamps in closets, basement stairwells, the attic, and the garage. He has an LED lamp, not CFL, and is thereby protected from mercury poisoning. What's your estimate of the amount of mercury that leaks out of a CFL in a decade? |
LED bulb
On May 4, 2:30*pm, Frank wrote:
Googled this up at HD: http://tinyurl.com/4xx897u Interesting that the stated power consumption for this bulb is actually HIGHER that for a 40W equivalent CFL... A lot of light being wasted in a filter to improve the color? |
LED bulb
---MIKE--- wrote: I bought an LED bulb today for my frequently used reading lamp. It's rated at equivalent to 40 watts and to last 46 years. That's about ten times what I am likely to last. The brightness is good and it comes on instantly. It can also be used with a dimmer. ---MIKE--- In the White Mountains of New Hampshire (44° 15' N - Elevation 1580') Hmm, Few of them burnt out on me after couple years. Just like CFLs. Lasting 46 years is a myth to me. |
LED bulb
Lets see. If we had filament bulbs, we would not need the
power conditioners? Trust liberals. Because welfare didn't work, we now need AFDC, SSI, SSD, Medicare, Medicade, and child health plus. -- Christopher A. Young Learn more about Jesus www.lds.org .. "DGDevin" wrote in message m... I was just talking to our electrician about those, he's been selling a lot of LED lighting lately and the only bug so far is failures apparently being caused by dirty power so to speak--spikes and surges and noise. He's looking at selling whole-house power conditioners as a result. I expect to replace our CFLs with LED within a couple of years once the price is more reasonable. |
LED bulb
It's like potassium iodate. If you fill your thyroid with
LED bulbs, the mercury bulbs can't establish themselves. -- Christopher A. Young Learn more about Jesus www.lds.org .. "mike" wrote in message ... He has an LED lamp, not CFL, and is thereby protected from mercury poisoning. What's your estimate of the amount of mercury that leaks out of a CFL in a decade? |
LED bulb
On 5/4/2011 2:09 PM, DGDevin wrote:
"---MIKE---" wrote in message ... I bought an LED bulb today for my frequently used reading lamp. It's rated at equivalent to 40 watts and to last 46 years. That's about ten times what I am likely to last. The brightness is good and it comes on instantly. It can also be used with a dimmer. I was just talking to our electrician about those, he's been selling a lot of LED lighting lately and the only bug so far is failures apparently being caused by dirty power so to speak--spikes and surges and noise. He's looking at selling whole-house power conditioners as a result. I expect to replace our CFLs with LED within a couple of years once the price is more reasonable. The first CFLs I bought didn't last 1/2 as long as claimed. The second generation seemed to be more reliable. Jim |
LED bulb
"Stormin Mormon" wrote in message ... Lets see. If we had filament bulbs, we would not need the power conditioners? Maybe not but you'd need more money to pay the electric company every month. Trust liberals. Because welfare didn't work, we now need AFDC, SSI, SSD, Medicare, Medicade, and child health plus. That's not very christian-like to let little kids go hungry. -- Christopher A. Young Learn more about Jesus www.lds.org . |
LED bulb
HeyBub wrote the following:
willshak wrote: ---MIKE--- wrote the following: I bought an LED bulb today for my frequently used reading lamp. It's rated at equivalent to 40 watts and to last 46 years. That's about ten times what I am likely to last. The brightness is good and it comes on instantly. It can also be used with a dimmer. Did you have a question? My house is loaded with CFLs. From desk lamps to living room lamps, to ceiling fixtures, to outside lamps. I started years ago when they first became available. The first ones were huge and I only used them as utility lamps in closets, basement stairwells, the attic, and the garage. He has an LED lamp, not CFL, and is thereby protected from mercury poisoning. Ooops. My brain has been affected by mercury poisoning. -- Bill In Hamptonburgh, NY In the original Orange County. Est. 1683 To email, remove the double zeroes after @ |
LED bulb
mike wrote the following:
HeyBub wrote: willshak wrote: ---MIKE--- wrote the following: I bought an LED bulb today for my frequently used reading lamp. It's rated at equivalent to 40 watts and to last 46 years. That's about ten times what I am likely to last. The brightness is good and it comes on instantly. It can also be used with a dimmer. Did you have a question? My house is loaded with CFLs. From desk lamps to living room lamps, to ceiling fixtures, to outside lamps. I started years ago when they first became available. The first ones were huge and I only used them as utility lamps in closets, basement stairwells, the attic, and the garage. He has an LED lamp, not CFL, and is thereby protected from mercury poisoning. What's your estimate of the amount of mercury that leaks out of a CFL in a decade? I, and many others of my age, have played with mercury as a kid in the 1940s. Rub it on a coin and it shined it up. I'm not sure, but we might have even tasted it. I remember busting the long florescent bulbs. There is nothing wrong with me now. Will someone answer that telephone?? -- Bill In Hamptonburgh, NY In the original Orange County. Est. 1683 To email, remove the double zeroes after @ |
LED bulb
On May 4, 5:06*pm, willshak wrote:
mike wrote the following: HeyBub wrote: willshak wrote: ---MIKE--- wrote the following: I bought an LED bulb today for my frequently used reading lamp. *It's rated at equivalent to 40 watts and to last 46 years. *That's about ten times what I am likely to last. *The brightness is good and it comes on instantly. *It can also be used with a dimmer. Did you have a question? My house is loaded with CFLs. From desk lamps to living room lamps, to ceiling fixtures, to outside lamps. I started years ago when they first became available. The first ones were huge and I only used them as utility lamps in closets, basement stairwells, the attic, and the garage. He has an LED lamp, not CFL, and is thereby protected from mercury poisoning. What's your estimate of the amount of mercury that leaks out of a CFL in a decade? I, and many others of my age, have played with mercury as a kid in the 1940s. Rub it on a coin and it shined it up. I'm not sure, but we might have even tasted it. I remember busting the long florescent bulbs. There is nothing wrong with me now. Will someone answer that telephone?? -- Bill In Hamptonburgh, NY In the original Orange County. Est. 1683 To email, remove the double zeroes after @- Hide quoted text - - Show quoted text - It apparently prevented autism..Autism has really come on strong since they started worrying about Mercury poisoningG. |
LED bulb (and who's the liberal, now?)
You must be a liberal? I find that liberals tend to use
inflamatory accusations, and tend to falsely assign (attribute) completely absurd and hurtful words to others. -- Christopher A. Young Learn more about Jesus www.lds.org .. "Bill Ng" wrote in message ... Trust liberals. Because welfare didn't work, we now need AFDC, SSI, SSD, Medicare, Medicade, and child health plus. That's not very christian-like to let little kids go hungry. |
LED bulb (and mercury poisoning)
The expression "mad as a hatter" came from working with
mercury. -- Christopher A. Young Learn more about Jesus www.lds.org .. "willshak" wrote in message m... What's your estimate of the amount of mercury that leaks out of a CFL in a decade? I, and many others of my age, have played with mercury as a kid in the 1940s. Rub it on a coin and it shined it up. I'm not sure, but we might have even tasted it. I remember busting the long florescent bulbs. There is nothing wrong with me now. Will someone answer that telephone?? -- Bill In Hamptonburgh, NY In the original Orange County. Est. 1683 To email, remove the double zeroes after @ |
LED bulb
On 05/04/2011 03:55 PM, Larry Fishel wrote:
On May 4, 2:30 pm, wrote: Googled this up at HD: http://tinyurl.com/4xx897u Interesting that the stated power consumption for this bulb is actually HIGHER that for a 40W equivalent CFL... A lot of light being wasted in a filter to improve the color? Even so, "easily dimmable" is HUGE. In a year or so I might buy some once some reports come back from the field. I see the reviews mention FM interference, which I have also noticed with CFLs. Not really ideal... nate -- replace "roosters" with "cox" to reply. http://members.cox.net/njnagel |
LED bulb
On 5/4/2011 3:55 PM, Larry Fishel wrote:
On May 4, 2:30 pm, wrote: Googled this up at HD: http://tinyurl.com/4xx897u Interesting that the stated power consumption for this bulb is actually HIGHER that for a 40W equivalent CFL... A lot of light being wasted in a filter to improve the color? I was wondering about that but had not looked up the comparison. I don't know a lot about electronics but do know that LED's need direct current so part of the extra energy may be in the AC/DC conversion. I would worry about the color too. I had bought a couple of CFL's that put out such white light that I could not use them indoors and had to consign them to the front porch. |
LED bulb
willshak wrote in
m: mike wrote the following: HeyBub wrote: willshak wrote: ---MIKE--- wrote the following: I bought an LED bulb today for my frequently used reading lamp. It's rated at equivalent to 40 watts and to last 46 years. That's about ten times what I am likely to last. The brightness is good and it comes on instantly. It can also be used with a dimmer. Did you have a question? My house is loaded with CFLs. From desk lamps to living room lamps, to ceiling fixtures, to outside lamps. I started years ago when they first became available. The first ones were huge and I only used them as utility lamps in closets, basement stairwells, the attic, and the garage. He has an LED lamp, not CFL, and is thereby protected from mercury poisoning. What's your estimate of the amount of mercury that leaks out of a CFL in a decade? I, and many others of my age, have played with mercury as a kid in the 1940s. Rub it on a coin and it shined it up. I'm not sure, but we might have even tasted it. I remember busting the long florescent bulbs. Great for playing Darth Vader vs. Luke Skywalker. There is nothing wrong with me now. Will someone answer that telephone?? |
LED bulb
On 05/04/2011 07:50 PM, Frank wrote:
On 5/4/2011 3:55 PM, Larry Fishel wrote: On May 4, 2:30 pm, wrote: Googled this up at HD: http://tinyurl.com/4xx897u Interesting that the stated power consumption for this bulb is actually HIGHER that for a 40W equivalent CFL... A lot of light being wasted in a filter to improve the color? I was wondering about that but had not looked up the comparison. I don't know a lot about electronics but do know that LED's need direct current so part of the extra energy may be in the AC/DC conversion. I would worry about the color too. I had bought a couple of CFL's that put out such white light that I could not use them indoors and had to consign them to the front porch. Good news is I understand that new labels are being phased in which will explicitly state color temp so once you find a color temp you like you can stick with it. http://www.ftc.gov/opa/2010/06/lightbulbs.shtm Bad news is it does not require CRI but I have been able to find that info for major brands at least online if not on the packaging. Unfortunately many CFLs still have crappy CRI... nate -- replace "roosters" with "cox" to reply. http://members.cox.net/njnagel |
LED bulb
Red Green wrote the following:
willshak wrote in m: mike wrote the following: HeyBub wrote: willshak wrote: ---MIKE--- wrote the following: I bought an LED bulb today for my frequently used reading lamp. It's rated at equivalent to 40 watts and to last 46 years. That's about ten times what I am likely to last. The brightness is good and it comes on instantly. It can also be used with a dimmer. Did you have a question? My house is loaded with CFLs. From desk lamps to living room lamps, to ceiling fixtures, to outside lamps. I started years ago when they first became available. The first ones were huge and I only used them as utility lamps in closets, basement stairwells, the attic, and the garage. He has an LED lamp, not CFL, and is thereby protected from mercury poisoning. What's your estimate of the amount of mercury that leaks out of a CFL in a decade? I, and many others of my age, have played with mercury as a kid in the 1940s. Rub it on a coin and it shined it up. I'm not sure, but we might have even tasted it. I remember busting the long florescent bulbs. Great for playing Darth Vader vs. Luke Skywalker. They weren't around when I was a kid. Cap guns were our weapon of choice. There is nothing wrong with me now. Will someone answer that telephone?? -- Bill In Hamptonburgh, NY In the original Orange County. Est. 1683 To email, remove the double zeroes after @ |
LED bulb
On 5/4/2011 2:09 PM, DGDevin wrote:
"---MIKE---" wrote in message ... I bought an LED bulb today for my frequently used reading lamp. It's rated at equivalent to 40 watts and to last 46 years. That's about ten times what I am likely to last. The brightness is good and it comes on instantly. It can also be used with a dimmer. I was just talking to our electrician about those, he's been selling a lot of LED lighting lately and the only bug so far is failures apparently being caused by dirty power so to speak--spikes and surges and noise. He's looking at selling whole-house power conditioners as a result. I expect to replace our CFLs with LED within a couple of years once the price is more reasonable. I know a guy who's built up quite a business replacing florescent tube lights in parking decks with direct drop in LED replacement lamps and he's doing a great deal of business. The owners have decided it's a good return on their investment. http://www.earthled.com/DirectLED-t8...placement.html http://preview.tinyurl.com/3l9du2c TDD |
LED bulb
On 5/4/2011 4:44 PM, Bill Ng wrote:
"Stormin wrote in message ... Lets see. If we had filament bulbs, we would not need the power conditioners? Maybe not but you'd need more money to pay the electric company every month. Trust liberals. Because welfare didn't work, we now need AFDC, SSI, SSD, Medicare, Medicade, and child health plus. That's not very christian-like to let little kids go hungry. Heck, I just eat the children, the toes are the crunchy part. TDD |
LED bulb
On May 4, 6:50*pm, Frank wrote:
On 5/4/2011 3:55 PM, Larry Fishel wrote: On May 4, 2:30 pm, *wrote: Googled this up at HD: http://tinyurl.com/4xx897u Interesting that the stated power consumption for this bulb is actually HIGHER that for a 40W equivalent CFL... A lot of light being wasted in a filter to improve the color? I was wondering about that but had not looked up the comparison. I don't know a lot about electronics but do know that LED's need direct current so part of the extra energy may be in the AC/DC conversion. I would worry about the color too. *I had bought a couple of CFL's that put out such white light that I could not use them indoors and had to consign them to the front porch. CFL lamps also require dc, they rectify the AC powerline ti dc, and then run a high-frequency dc - ac converter tolight the lamp tube itself. There is a large step-up in voltage needed to strike the initial arc thru the tube, and the reduction in mercury reduces trhe pressure in the tube until it heats up a little. Regular tubular fluorescents contain appreciably more mercury than the cfl's do because the arc lengthis mujch longer and the diameter of the tube is much larger. |
LED bulb
"Stormin Mormon" wrote in message ... Lets see. If we had filament bulbs, we would not need the power conditioners? Like a lot of older electrical/electronic hardware, such bulbs are quite tolerant of poor quality electrical supply. Newer electronic gear--not so much. But the point is CFLs and LEDs burn a small fraction of the power of incandescent bulbs, and in case it's escaped your attention burning fossil fuels has some notable drawbacks including cost and pollution. Trust liberals. Because welfare didn't work, we now need AFDC, SSI, SSD, Medicare, Medicade, and child health plus. Leave it to a bargain-basement ideologue to miss the point. If you want to pay more for your electricity, go on using incandescent bulbs. We slashed our power bill by using CFLs with no drawbacks I can see, and I'll be happy to try LEDs when the price is right. You can go on burning kerosene or whatever it is you do, and don't forget to check under your bed for liberals before you go to sleep. |
LED bulb
"JimT" wrote in message net... The first CFLs I bought didn't last 1/2 as long as claimed. The second generation seemed to be more reliable. I've had a few that died way before the advertised date, and others that have gone on happily for years and years, so it's maybe a factory quality control issue rather than the design itself. But they sure cut our power bill. I'll try LEDs when I figure the price is right, and go from there based on what I find. |
LED bulb
"The Daring Dufas" wrote in message ... I know a guy who's built up quite a business replacing florescent tube lights in parking decks with direct drop in LED replacement lamps and he's doing a great deal of business. The owners have decided it's a good return on their investment. Our neighbor owns a nightclub and has replaced most of his stage lighting with LED units which not only burn way less power but don't generate nearly as much heat which the performers really appreciate. He even thinks it's saving him money on air conditioning since the new lights are producing so much less heat. It sure looks like the way lighting will go. |
LED bulb
On May 4, 4:44*pm, "Bill Ng" wrote:
"Stormin Mormon" wrote in ... Lets see. If we had filament bulbs, we would not need the power conditioners? Maybe not but you'd need more money to pay the electric company every month. Trust liberals. Because welfare didn't work, we now need AFDC, SSI, SSD, Medicare, Medicade, and child health plus. That's not very christian-like to let little kids go hungry. -- Christopher A. Young Learn more about Jesus *www.lds.org . I don't think his logic (or lack of it) comes from "Mormon" or Christian values...more the selfishness of old age. It's a regression to childlike behavior. It's funny that so many hippies that were super liberals in the Sixties and Seventies...are God offal, staunch, fat, conservatives now. My brother being one. |
LED bulb
On May 5, 5:52*am, Bob Villa wrote:
On May 4, 4:44*pm, "Bill Ng" wrote: "Stormin Mormon" wrote in ... Lets see. If we had filament bulbs, we would not need the power conditioners? Maybe not but you'd need more money to pay the electric company every month. Trust liberals. Because welfare didn't work, we now need AFDC, SSI, SSD, Medicare, Medicade, and child health plus. That's not very christian-like to let little kids go hungry. -- Christopher A. Young Learn more about Jesus *www.lds.org . I don't think his logic (or lack of it) comes from "Mormon" or Christian values...more the selfishness of old age. It's a regression to childlike behavior. It's funny that so many hippies that were super liberals in the Sixties and Seventies...are God offal, staunch, fat, conservatives now. My brother being one. My brain is shot too, it's "awful" ain't it? (can't even rely on spell- check anymore!) |
LED bulb
"DGDevin" wrote in
m: "The Daring Dufas" wrote in message ... I know a guy who's built up quite a business replacing florescent tube lights in parking decks with direct drop in LED replacement lamps and he's doing a great deal of business. The owners have decided it's a good return on their investment. Our neighbor owns a nightclub and has replaced most of his stage lighting with LED units which not only burn way less power but don't generate nearly as much heat which the performers really appreciate. He even thinks it's saving him money on air conditioning since the new lights are producing so much less heat. It sure looks like the way lighting will go. It sounds great, and I will keep it in mind, but $60/tube for a 4 ft fixture that likely needs 2 tubes to work well enough? At 1/3 the price I'll consider a few replacements, but I guess that'll be a few years off I did pay $40 for a 3-light LED undercabinet light. At 1.5 W/LED, I can afford continuous light on my kitchen counter without the overheads. -- Best regards Han email address is invalid |
LED bulb
"Stormin Mormon" wrote in message
... Lets see. If we had filament bulbs, we would not need the power conditioners? Trust liberals. Because welfare didn't work, we now need AFDC, SSI, SSD, Medicare, Medicade, and child health plus. Medicade? Is that a new lemon-flavored beverage? I think it's Medicaid. (-: -- Bobby G. |
LED bulb
On May 5, 12:52*am, "DGDevin" wrote:
"Stormin Mormon" *wrote in ... Lets see. If we had filament bulbs, we would not need the power conditioners? Like a lot of older electrical/electronic hardware, such bulbs are quite tolerant of poor quality electrical supply. *Newer electronic gear--not so much. *But the point is CFLs and LEDs burn a small fraction of the power of incandescent bulbs, and in case it's escaped your attention burning fossil fuels has some notable drawbacks including cost and pollution. Trust liberals. Because welfare didn't work, we now need AFDC, SSI, SSD, Medicare, Medicade, and child health plus. Leave it to a bargain-basement ideologue to miss the point. *If you want to pay more for your electricity, go on using incandescent bulbs. *We slashed our power bill by using CFLs with no drawbacks I can see, and I'll be happy to try LEDs when the price is right. *You can go on burning kerosene or whatever it is you do, and don't forget to check under your bed for liberals before you go to sleep. I HAVE SEEN SINLGE LED BI-PIN LAMPS ON A TRACKLIGHT SYSTEM..IT LOOKED NICE & THE LIGHT WAS SUFFICIENT AT NIGHT...BUT SOME LEDS I HAVE SEEN WORKING IN DAYLIGHT ARE INSUFFICIENT. SOMEONE COME & ASK ME MY NAME :) Taken back by surprise, what I saw with my eyes, this girl really loves this guy !;) THERE'LL BE NO MUTANT ENEMY ! POLITICAL ENDS AND SUB-REMAINS SHALL DIE ! TGITM |
LED bulb
Frank wrote in news:ipu43o$g07$1@dont-
email.me: On 5/4/2011 11:48 PM, hr(bob) wrote: On May 4, 6:50 pm, wrote: On 5/4/2011 3:55 PM, Larry Fishel wrote: On May 4, 2:30 pm, wrote: Googled this up at HD: http://tinyurl.com/4xx897u Interesting that the stated power consumption for this bulb is actually HIGHER that for a 40W equivalent CFL... A lot of light being wasted in a filter to improve the color? I was wondering about that but had not looked up the comparison. I don't know a lot about electronics but do know that LED's need direct current so part of the extra energy may be in the AC/DC conversion. I would worry about the color too. I had bought a couple of CFL's that put out such white light that I could not use them indoors and had to consign them to the front porch. CFL lamps also require dc, they rectify the AC powerline ti dc, and then run a high-frequency dc - ac converter tolight the lamp tube itself. There is a large step-up in voltage needed to strike the initial arc thru the tube, and the reduction in mercury reduces trhe pressure in the tube until it heats up a little. Regular tubular fluorescents contain appreciably more mercury than the cfl's do because the arc lengthis mujch longer and the diameter of the tube is much larger. Did not know that. I do recall someone posting a diagram or picture of internal electronics for a cfl and there was a lot of stuff in there. Surprising that they can make them so cheap. mercury is what provides the initial ions for current to flow across the tube. it helps establish the arc. I took apart a CFL and it only had two transistors,a tiny transformer,a couple of electrolytic caps,2 diodes and some chip caps. It rectifies and DOUBLES the input voltage,then converts to HF AC. -- Jim Yanik jyanik at localnet dot com |
LED bulb
I have a 50,000 watt liberal finder, which I activate before
bedtime. -- Christopher A. Young Learn more about Jesus www.lds.org .. "DGDevin" wrote in message ... to try LEDs when the price is right. You can go on burning kerosene or whatever it is you do, and don't forget to check under your bed for liberals before you go to sleep. |
LED bulb
I, and many others of my age, have played with mercury as a kid in the 1940s. Rub it on a coin and it shined it up. I'm not sure, but we might have even tasted it. I remember busting the long florescent bulbs. There is nothing wrong with me now. Me too. Many times. I think that my first few Gilbert chemistry sets even contained a small vial of mercury. I also played closely with a "nuclear energy" set as a young teenager that included several sources of alpha, beta, and gamma emitters. I also probably fried my feet to a crisp in the shoe store fluoroscopes in the early 1950s. I'm in my mid-60s with no evidence of radiation damage or mercury poisioning. This is not to say that mercury and ionizing radiation are not dangerous, or that what we did is safe. But it seems that the current hyperventilation over avoiding mercury levels that are only a small fraction of what we experienced might be an over-reaction. |
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