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UK diy (uk.d-i-y) For the discussion of all topics related to diy (do-it-yourself) in the UK. All levels of experience and proficency are welcome to join in to ask questions or offer solutions. |
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#1
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Why eco-light bulbs aren't what they seem
http://news.bbc.co.uk/1/hi/magazine/8406923.stm
http://www.bbc.co.uk/iplayer/console/b00p6v3t Think those compact fluorescent bulbs are not as bright as the old-style lights they replaced? You are probably not imagining it. A guide to the amount of light given by a CFL bulb is given on its box as a comparison to the wattage of an incandescent bulb. But the European Commission says in a FAQ document this can be misleading. "Currently, exaggerated claims are often made on the packaging about the light output of compact fluorescent lamps - for example that an 11-12-watt compact fluorescent lamp would be the equivalent of a 60-watt incandescent, which is not true." |
#2
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Why eco-light bulbs aren't what they seem
In message , "george [dicegeorge]"
writes http://news.bbc.co.uk/1/hi/magazine/8406923.stm http://www.bbc.co.uk/iplayer/console/b00p6v3t As posted by Huge two days ago Think those compact fluorescent bulbs are not as bright as the old-style lights they replaced? You are probably not imagining it. A guide to the amount of light given by a CFL bulb is given on its box as a comparison to the wattage of an incandescent bulb. But the European Commission says in a FAQ document this can be misleading. "Currently, exaggerated claims are often made on the packaging about the light output of compact fluorescent lamps - for example that an 11-12-watt compact fluorescent lamp would be the equivalent of a 60-watt incandescent, which is not true." -- geoff |
#3
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Why eco-light bulbs aren't what they seem
"george [dicegeorge]" wrote in message ... http://news.bbc.co.uk/1/hi/magazine/8406923.stm http://www.bbc.co.uk/iplayer/console/b00p6v3t Think those compact fluorescent bulbs are not as bright as the old-style lights they replaced? You are probably not imagining it. A guide to the amount of light given by a CFL bulb is given on its box as a comparison to the wattage of an incandescent bulb. But the European Commission says in a FAQ document this can be misleading. "Currently, exaggerated claims are often made on the packaging about the light output of compact fluorescent lamps - for example that an 11-12-watt compact fluorescent lamp would be the equivalent of a 60-watt incandescent, which is not true." Is it Groundhog day? :-) |
#4
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Why eco-light bulbs aren't what they seem
"george [dicegeorge]" wrote in message ... http://news.bbc.co.uk/1/hi/magazine/8406923.stm http://www.bbc.co.uk/iplayer/console/b00p6v3t Think those compact fluorescent bulbs are not as bright as the old-style lights they replaced? You are probably not imagining it. A guide to the amount of light given by a CFL bulb is given on its box as a comparison to the wattage of an incandescent bulb. But the European Commission says in a FAQ document this can be misleading. "Currently, exaggerated claims are often made on the packaging about the light output of compact fluorescent lamps - for example that an 11-12-watt compact fluorescent lamp would be the equivalent of a 60-watt incandescent, which is not true." You mean manufacturers give 'best case' figures on their packaging? Extraordinary! |
#5
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Why eco-light bulbs aren't what they seem
On Dec 13, 4:35*pm, "george [dicegeorge]"
wrote: http://news.bbc.co.uk/1/hi/magazine/...nsole/b00p6v3t Think those compact fluorescent bulbs are not as bright as the old-style lights they replaced? You are probably not imagining it. A guide to the amount of light given by a CFL bulb is given on its box as a comparison to the wattage of an incandescent bulb. But the European Commission says in a FAQ document this can be misleading. "Currently, exaggerated claims are often made on the packaging about the light output of compact fluorescent lamps - for example that an 11-12-watt compact fluorescent lamp would be the equivalent of a 60-watt incandescent, which is not true." You must be a incandesant bulb salesman. Here is the US we dont share your ignorant line, we have independant magazines that have verified the truth, Consumer Reports, Popular Mechanics did reviews, Incandesants are nothing but electric heaters that output light as a byproduct. Of course you know that only 4-6% of the energy used by an incandesant is light you can actualy see, the rest is heat, Edison made the thing, its time it dies. |
#6
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Why eco-light bulbs aren't what they seem
In message
, ransley writes On Dec 13, 4:35*pm, "george [dicegeorge]" wrote: http://news.bbc.co.uk/1/hi/magazine/....bbc.co.uk/ipl ayer/console/b00p6v3t Think those compact fluorescent bulbs are not as bright as the old-style lights they replaced? You are probably not imagining it. A guide to the amount of light given by a CFL bulb is given on its box as a comparison to the wattage of an incandescent bulb. But the European Commission says in a FAQ document this can be misleading. "Currently, exaggerated claims are often made on the packaging about the light output of compact fluorescent lamps - for example that an 11-12-watt compact fluorescent lamp would be the equivalent of a 60-watt incandescent, which is not true." You must be a incandesant bulb salesman. Here is the US we dont share your ignorant line, we have independant magazines that have verified the truth, Consumer Reports, Popular Mechanics did reviews, Incandesants are nothing but electric heaters that output light as a byproduct. Of course you know that only 4-6% of the energy used by an incandesant is light you can actualy see, the rest is heat, Edison made the thing, its time it dies. I think that we have gone well beyond your limited understanding on the subject several times in this NG CFLs are certainly better in terms of light output / watt (well for a time, anyway), but not suitable for all applications, and some of us resent not having the choice to use what is appropriate for a particular application Here in the UK, we see you septics as being the guzzlers par excellence, unparalleled in your power consumption / head Sorry, what were you saying about ignorance and truth ? go and sort your ****ing country out then ... -- geoff |
#7
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Why eco-light bulbs aren't what they seem
ransley :
Here is the US we dont share your ignorant line, we have independant magazines that have verified the truth, Consumer Reports, Popular Mechanics did reviews, Astounding! (not) The UK equivalent of Consumers Report is "Which?" and you can read their reviews he http://www.which.co.uk/advice/energy...erns/index.jsp -- Mike Barnes |
#8
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Why eco-light bulbs aren't what they seem
On Sun, 13 Dec 2009 17:57:31 -0800 (PST)
ransley wrote: Here is the US we dont share your ignorant line, we have independant magazines that have verified the truth, Consumer Reports, Popular Mechanics did reviews, Incandesants are nothing but electric heaters that output light as a byproduct. Of course you know that only 4-6% of the energy used by an incandesant is light you can actualy see, the rest is heat, Edison made the thing, its time it dies. Ah, the United States, paragon of energy efficiency. (Wistful sigh) R. |
#9
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Why eco-light bulbs aren't what they seem
ransley wrote:
On Dec 13, 4:35 pm, "george [dicegeorge]" wrote: http://news.bbc.co.uk/1/hi/magazine/...nsole/b00p6v3t Think those compact fluorescent bulbs are not as bright as the old-style lights they replaced? You are probably not imagining it. A guide to the amount of light given by a CFL bulb is given on its box as a comparison to the wattage of an incandescent bulb. But the European Commission says in a FAQ document this can be misleading. "Currently, exaggerated claims are often made on the packaging about the light output of compact fluorescent lamps - for example that an 11-12-watt compact fluorescent lamp would be the equivalent of a 60-watt incandescent, which is not true." You must be a incandesant bulb salesman. Here is the US we dont share your ignorant line, we have independant magazines that have verified the truth, Consumer Reports, Popular Mechanics did reviews, Incandesants are nothing but electric heaters that output light as a byproduct. Of course you know that only 4-6% of the energy used by an incandesant is light you can actualy see, the rest is heat, Edison made the thing, its time it dies. Anyone would forgive you for believing that Edison invented the lightbulb, since you're American. A chap called Joseph Swean got there first. Insular countries tend to believe it was one of their nationals who invented the light bulb. I forget the name of the equivalent Russian inventor? |
#10
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Why eco-light bulbs aren't what they seem
On 13 Dec, 22:35, "george [dicegeorge]"
wrote: http://news.bbc.co.uk/1/hi/magazine/...nsole/b00p6v3t Think those compact fluorescent bulbs are not as bright as the old-style lights they replaced? You are probably not imagining it. A guide to the amount of light given by a CFL bulb is given on its box as a comparison to the wattage of an incandescent bulb. But the European Commission says in a FAQ document this can be misleading. "Currently, exaggerated claims are often made on the packaging about the light output of compact fluorescent lamps - for example that an 11-12-watt compact fluorescent lamp would be the equivalent of a 60-watt incandescent, which is not true." The pack of Phillips bulbs Npower sent me says to compare them with Soft-tones. (don't know if this advice was always given and I just didn't read it properly, but it would be more accurate in my opinion) Regards Al |
#11
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Why eco-light bulbs aren't what they seem
On 14 Dec, 10:38, al wrote:
On 13 Dec, 22:35, "george [dicegeorge]" wrote: http://news.bbc.co.uk/1/hi/magazine/...ww.bbc.co.uk/i... Think those compact fluorescent bulbs are not as bright as the old-style lights they replaced? You are probably not imagining it. A guide to the amount of light given by a CFL bulb is given on its box as a comparison to the wattage of an incandescent bulb. But the European Commission says in a FAQ document this can be misleading. "Currently, exaggerated claims are often made on the packaging about the light output of compact fluorescent lamps - for example that an 11-12-watt compact fluorescent lamp would be the equivalent of a 60-watt incandescent, which is not true." The pack of Phillips bulbs Npower sent me says to compare them with Soft-tones. (don't know if this advice was always given and I just didn't read it properly, but it would be more accurate in my opinion) Regards Al Mine from tesco said that, trouble is why compare them with something nobody every uses ? Because most people don't bother to read the small print. I believe soft-tone bulbs were those coloured ones, which are obviously less efficient. Simon. |
#12
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Why eco-light bulbs aren't what they seem
In article ,
al writes: On 13 Dec, 22:35, "george [dicegeorge]" wrote: http://news.bbc.co.uk/1/hi/magazine/...nsole/b00p6v3t Think those compact fluorescent bulbs are not as bright as the old-style lights they replaced? You are probably not imagining it. A guide to the amount of light given by a CFL bulb is given on its box as a comparison to the wattage of an incandescent bulb. But the European Commission says in a FAQ document this can be misleading. "Currently, exaggerated claims are often made on the packaging about the light output of compact fluorescent lamps - for example that an 11-12-watt compact fluorescent lamp would be the equivalent of a 60-watt incandescent, which is not true." The pack of Phillips bulbs Npower sent me says to compare them with Soft-tones. (don't know if this advice was always given and I just didn't read it properly, but it would be more accurate in my opinion) That's what CFL's in this country have always been compared with. As virtually no one uses softone lamps, that's why most people have been very disappointed with their first experience. Feit is the only brand I've come across with honest power equivalency markings. Otherwise, ignore the markings on the box, and use a ratio of 4:1 for replacing GLS, 3:1 for replacing large reflector lamps, and 2:1 for small reflector lamps. -- Andrew Gabriel [email address is not usable -- followup in the newsgroup] |
#13
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Why eco-light bulbs aren't what they seem
We were somewhere around Barstow, on the edge of the desert, when the
drugs began to take hold. I remember "Fredxx" saying something like: light bulbs I forget the name of the equivalent Russian inventor? Russian claims seem to centre around Yablochkov, although it was actually a carbon arc lamp in his case. The only originality was the self-regulating nature of the carbon gap, as carbon arc lamps had been around for a while. http://wapedia.mobi/en/Pavel_Yablochkov The Russians claim everything, including the steam locomotive. |
#14
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Why eco-light bulbs aren't what they seem
"TheOldFellow" wrote in message . .. On Sun, 13 Dec 2009 17:57:31 -0800 (PST) ransley wrote: Here is the US we dont share your ignorant line, we have independant magazines that have verified the truth, Consumer Reports, Popular Mechanics did reviews, Incandesants are nothing but electric heaters that output light as a byproduct. Of course you know that only 4-6% of the energy used by an incandesant is light you can actualy see, the rest is heat, Edison made the thing, its time it dies. Ah, the United States, paragon of energy efficiency. (Wistful sigh) R. USA It's something like: 4% of the worlds population producing 25% of the world's pollution mark |
#15
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Why eco-light bulbs aren't what they seem
On Mon, 14 Dec 2009 10:28:51 +0000, Fredxx wrote:
Anyone would forgive you for believing that Edison invented the lightbulb, since you're American. A chap called Joseph Swean got there first. Insular countries tend to believe it was one of their nationals who invented the light bulb. I forget the name of the equivalent Russian inventor? "historians Robert Friedel and Paul Israel [3] list 22 inventors of incandescent lamps prior to Joseph Wilson Swan and Thomas Edison." (from wikipedia). I can believe it, too - the person recognised as inventing something according to popular history is usually right at the end of a long line of folks (powered flight, radio and the steam loco are all fun ones to dig into!) who already have something that works - and even then a lot of recognised 'inventions' are often the bringing-together of several existing technologies or ideas (i.e. the recognised 'inventor' is little more than the adult equivalent of a kid playing with Lego) Having spent time in several countries, I reckon they're all insular and over-protective when it comes to their technological history. cheers Jules |
#16
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Why eco-light bulbs aren't what they seem
"OG" wrote in message ... "george [dicegeorge]" wrote in message ... http://news.bbc.co.uk/1/hi/magazine/8406923.stm http://www.bbc.co.uk/iplayer/console/b00p6v3t Think those compact fluorescent bulbs are not as bright as the old-style lights they replaced? You are probably not imagining it. A guide to the amount of light given by a CFL bulb is given on its box as a comparison to the wattage of an incandescent bulb. But the European Commission says in a FAQ document this can be misleading. "Currently, exaggerated claims are often made on the packaging about the light output of compact fluorescent lamps - for example that an 11-12-watt compact fluorescent lamp would be the equivalent of a 60-watt incandescent, which is not true." You mean manufacturers give 'best case' figures on their packaging? Extraordinary! yes, but the politicians didn't need to get into the scam as well did they tim |
#17
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Why eco-light bulbs aren't what they seem
On Dec 14, 1:57*am, ransley wrote:
You must be a incandesant bulb salesman. Here is the US we dont share your ignorant line, we have independant magazines that have verified the truth, Consumer Reports, Popular Mechanics did reviews, Incandesants are nothing but electric heaters that output light as a byproduct. Of course you know that only 4-6% of the energy used by an incandesant is light you can actualy see, the rest is heat, Edison made the thing, its time it dies. Heat is good for a large part of the time that incandescent bulbs are used in the UK. MBQ |
#18
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Why eco-light bulbs aren't what they seem
In article ,
"Doctor Drivel" writes: Which is the best to use on a dimmer IME, none. There are dimmable ones, some which run on a dimmer and others which can use just a regular switch, but none which actually dim like a normal bulb. The other problem is that most dimmers have a minimum load below which they don't work, and with that typically being 40W and the CFL being less than that, the dimmer won't work anyway. If you want dimming, forget about retrofit CFLs and go with either dimming fluorescents on electronic ballasts, or dimming 12V halogens (although they may also be banned at some point in the future). LEDs may eventually be the way to go here, but they aren't there yet (unless you have lots of money, or you want to make the whole thing yourself from individual LED parts, and you don't need lots of light). I'm planning on converting some mains lights (3 lamp pendant and two single lamp wall lights) which are on a dimmer to use 12V halogen capsules instead. I'm making up a set of halogen capsule (G5.3) to bayonet cap (B22d) adaptors. Currently made two, and just got a 3rd bayonet cap base from a dead lamp (I'm limited by rate at which I find dead bayonet cap lamps from which I can reuse the lamp caps). and has the best glow nearest to a normal bulb? That's subjective. You would need to more accurately define which properies of a normal bulb you want to match. -- Andrew Gabriel [email address is not usable -- followup in the newsgroup] |
#19
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Why eco-light bulbs aren't what they seem
"Andrew Gabriel" wrote in message ... In article , "Doctor Drivel" writes: Which is the best to use on a dimmer IME, none. There are dimmable ones, some which run on a dimmer and others which can use just a regular switch, but none which actually dim like a normal bulb. The other problem is that most dimmers have a minimum load below which they don't work, and with that typically being 40W and the CFL being less than that, the dimmer won't work anyway. Is there a direct replacement for candle shaped bulbs? Dimmable if possible. |
#20
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Why eco-light bulbs aren't what they seem
On Tue, 15 Dec 2009 14:19:07 +0000, Andrew Gabriel wrote:
In article , "Doctor Drivel" writes: Which is the best to use on a dimmer IME, none. There are dimmable ones, some which run on a dimmer and others which can use just a regular switch, but none which actually dim like a normal bulb. Ha, I just had a wonderful idea for an electromechanical dimmer, with a motorised shield that lowers down over the CFL by an amount proportional to a dimmer switch setting... wibble. |
#21
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Why eco-light bulbs aren't what they seem
On Dec 15, 12:09*pm, wrote:
Thus spake Man at B&Q ) unto the assembled multitudes: Incandesants are nothing but electric heaters that output light as a byproduct. [...] Heat is good for a large part of the time that incandescent bulbs are used in the UK. I saw a fascinating show on the TV a couple of weeks ago where one of the presenters made an oven using one or two 100W incandescent bulbs, and roasted a chicken in it, using a fraction of the energy of a conventional oven. *I was most impressed. Nothing new or impressive there. Slow cookers have been around for years. MBQ |
#22
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Why eco-light bulbs aren't what they seem
On Dec 14, 11:04*am, (Andrew Gabriel)
wrote: In article , * * * * al writes: On 13 Dec, 22:35, "george [dicegeorge]" wrote: http://news.bbc.co.uk/1/hi/magazine/...ww.bbc.co.uk/i.... Think those compact fluorescent bulbs are not as bright as the old-style lights they replaced? You are probably not imagining it. A guide to the amount of light given by a CFL bulb is given on its box as a comparison to the wattage of an incandescent bulb. But the European Commission says in a FAQ document this can be misleading. "Currently, exaggerated claims are often made on the packaging about the light output of compact fluorescent lamps - for example that an 11-12-watt compact fluorescent lamp would be the equivalent of a 60-watt incandescent, which is not true." The pack of Phillips bulbs Npower sent me says to compare them with Soft-tones. (don't know if this advice was always given and I just didn't read it properly, but it would be more accurate in my opinion) That's what CFL's in this country have always been compared with. As virtually no one uses softone lamps, that's why most people have been very disappointed with their first experience. Feit is the only brand I've come across with honest power equivalency markings. Otherwise, ignore the markings on the box, and use a ratio of 4:1 for replacing GLS, 3:1 is the advice in the US, according to Radio 4s "More or Less" last week, to allow for age related dimming. MBQ |
#23
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Why eco-light bulbs aren't what they seem
In article ,
"Man at B&Q" writes: On Dec 14, 11:04*am, (Andrew Gabriel) wrote: In article , * * * * al writes: On 13 Dec, 22:35, "george [dicegeorge]" wrote: http://news.bbc.co.uk/1/hi/magazine/...ww.bbc.co.uk/i... Think those compact fluorescent bulbs are not as bright as the old-style lights they replaced? You are probably not imagining it. A guide to the amount of light given by a CFL bulb is given on its box as a comparison to the wattage of an incandescent bulb. But the European Commission says in a FAQ document this can be misleading. "Currently, exaggerated claims are often made on the packaging about the light output of compact fluorescent lamps - for example that an 11-12-watt compact fluorescent lamp would be the equivalent of a 60-watt incandescent, which is not true." The pack of Phillips bulbs Npower sent me says to compare them with Soft-tones. (don't know if this advice was always given and I just didn't read it properly, but it would be more accurate in my opinion) That's what CFL's in this country have always been compared with. As virtually no one uses softone lamps, that's why most people have been very disappointed with their first experience. Feit is the only brand I've come across with honest power equivalency markings. Otherwise, ignore the markings on the box, and use a ratio of 4:1 for replacing GLS, 3:1 is the advice in the US, according to Radio 4s "More or Less" last week, to allow for age related dimming. Note that US filament lamps are more efficient than UK ones, because their 120V mains is nearer the ideal voltage for a filament lamp (55V for a 100W lamp) than our 230/240V mains. Also, their lamps are overrun (750hrs) compared with ours (1000hrs), which also makes theirs more efficient. So 3:1 is probably about right for them. -- Andrew Gabriel [email address is not usable -- followup in the newsgroup] |
#24
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Why eco-light bulbs aren't what they seem
"Andrew Gabriel" wrote in message ... In article , "Doctor Drivel" writes: Which is the best to use on a dimmer IME, none. There are dimmable ones, some which run on a dimmer and others which can use just a regular switch, but none which actually dim like a normal bulb. The other problem is that most dimmers have a minimum load below which they don't work, and with that typically being 40W and the CFL being less than that, the dimmer won't work anyway. If you want dimming, forget about retrofit CFLs and go with either dimming fluorescents on electronic ballasts, or dimming 12V halogens (although they may also be banned at some point in the future). LEDs may eventually be the way to go here, but they aren't there yet (unless you have lots of money, or you want to make the whole thing yourself from individual LED parts, and you don't need lots of light). I'm planning on converting some mains lights (3 lamp pendant and two single lamp wall lights) which are on a dimmer to use 12V halogen capsules instead. I'm making up a set of halogen capsule (G5.3) to bayonet cap (B22d) adaptors. Currently made two, and just got a 3rd bayonet cap base from a dead lamp (I'm limited by rate at which I find dead bayonet cap lamps from which I can reuse the lamp caps). Andrew Gabriel [email address is not usable -- followup in the newsgroup] Any chance of a photo of these adaptors please? And if you are in a rush for the other two dead lamps let me know. There two in my van from work today. Adam |
#25
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Why eco-light bulbs aren't what they seem
In article ,
"ARWadsworth" writes: "Andrew Gabriel" wrote in message ... I'm planning on converting some mains lights (3 lamp pendant and two single lamp wall lights) which are on a dimmer to use 12V halogen capsules instead. I'm making up a set of halogen capsule (G5.3) to bayonet cap (B22d) adaptors. Currently made two, and just got a 3rd bayonet cap base from a dead lamp (I'm limited by rate at which I find dead bayonet cap lamps from which I can reuse the lamp caps). Any chance of a photo of these adaptors please? Not very good picture, but... http://www.cucumber.demon.co.uk/lights/adapter.jpg I was going to pot them with something (thought about cement/mortar). In the end, the short length of wire and tight ptfe insulation is just about robust enough to push a lamp capsule in without it collapsing. When searching around, I did find an ES version of this, but not BC. And if you are in a rush for the other two dead lamps let me know. There two in my van from work today. Probably not worth the postage! It will be after Christmas when I complete the job, and I'll probably have enough by then, thanks. -- Andrew Gabriel [email address is not usable -- followup in the newsgroup] |
#26
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Why eco-light bulbs aren't what they seem
"Andrew Gabriel" wrote in message ... In article , "ARWadsworth" writes: "Andrew Gabriel" wrote in message ... I'm planning on converting some mains lights (3 lamp pendant and two single lamp wall lights) which are on a dimmer to use 12V halogen capsules instead. I'm making up a set of halogen capsule (G5.3) to bayonet cap (B22d) adaptors. Currently made two, and just got a 3rd bayonet cap base from a dead lamp (I'm limited by rate at which I find dead bayonet cap lamps from which I can reuse the lamp caps). Any chance of a photo of these adaptors please? Not very good picture, but... http://www.cucumber.demon.co.uk/lights/adapter.jpg I was going to pot them with something (thought about cement/mortar). In the end, the short length of wire and tight ptfe insulation is just about robust enough to push a lamp capsule in without it collapsing. When searching around, I did find an ES version of this, but not BC. Very interesting. Thank you. Did you just solder the two leads up together and then wrap them in insulation? Adam |
#27
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Why eco-light bulbs aren't what they seem
On 15 Dec, 12:09, wrote:
I saw a fascinating show on the TV a couple of weeks ago where one of the presenters made an oven using one or two 100W incandescent bulbs, and roasted a chicken in it, using a fraction of the energy of a conventional oven. *I was most impressed. I've been cooking like that for a long time, just not chicken. Sheep, cow, pig, fish. all kinds of game ... far better than in a conventional oven. Mary |
#28
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Why eco-light bulbs aren't what they seem
On 15 Dec, 16:19, wrote:
Thus spake Man at B&Q ) unto the assembled multitudes: I saw a fascinating show on the TV a couple of weeks ago where one of the presenters made an oven using one or two 100W incandescent bulbs, and roasted a chicken in it, using a fraction of the energy of a conventional oven. I was most impressed. Nothing new or impressive there. Slow cookers have been around for years. Yeah, but have you ever made one from scratch? I have. Not for cooking originally but for melting beeswax and warming honey in bulk. It's very easy. I just thought it was rather neat to make an oven powered by a light bulb, that's all. *As I recall, it didn't take too much longer to cook the chicken than in a conventional oven, so it wasn't that slow a "slow cooker". True. A haybox works too. and our new wood burning stove is superb for cooking. Mary -- * * * * * * * * * * * * * * * * *Andy Clews * * * * * * * * * * * * * * University of Sussex * * * * * * * * **** Remove DENTURES if replying by email *** |
#29
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Why eco-light bulbs aren't what they seem
wrote in message
... Thus spake Man at B&Q ) unto the assembled multitudes: I saw a fascinating show on the TV a couple of weeks ago where one of the presenters made an oven using one or two 100W incandescent bulbs, and roasted a chicken in it, using a fraction of the energy of a conventional oven. I was most impressed. Nothing new or impressive there. Slow cookers have been around for years. Yeah, but have you ever made one from scratch? I just thought it was rather neat to make an oven powered by a light bulb, that's all. As I recall, it didn't take too much longer to cook the chicken than in a conventional oven, so it wasn't that slow a "slow cooker". How much of that was due to having better insulation than a conventional oven? |
#30
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Why eco-light bulbs aren't what they seem
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"ARWadsworth" writes: "Andrew Gabriel" wrote in message ... In article , "ARWadsworth" writes: "Andrew Gabriel" wrote in message ... I'm planning on converting some mains lights (3 lamp pendant and two single lamp wall lights) which are on a dimmer to use 12V halogen capsules instead. I'm making up a set of halogen capsule (G5.3) to bayonet cap (B22d) adaptors. Currently made two, and just got a 3rd bayonet cap base from a dead lamp (I'm limited by rate at which I find dead bayonet cap lamps from which I can reuse the lamp caps). Any chance of a photo of these adaptors please? Not very good picture, but... http://www.cucumber.demon.co.uk/lights/adapter.jpg I was going to pot them with something (thought about cement/mortar). In the end, the short length of wire and tight ptfe insulation is just about robust enough to push a lamp capsule in without it collapsing. When searching around, I did find an ES version of this, but not BC. Very interesting. Thank you. Did you just solder the two leads up together and then wrap them in insulation? The leads are part of the G5.3 lampholder, and come with PTFE insulation on them in expectation they may get very hot. I just cut them to the right length (so filament position is about the same as in candle bulb which these are replacing), and soldered to the lamp cap connections. The cables are stranded but much stiffer than they look. They might be silver plated to protect against copper oxidising, although the ptfe is quite stiff. -- Andrew Gabriel [email address is not usable -- followup in the newsgroup] |
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