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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
Posted to uk.d-i-y
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An LED question
In my garden I have some globe lights, all are fed from a transformer giving
nominally 12v ac from a radio switch I can operate from my pocket. However the construction of the wiring andlights is quite frankly rubbish, but I do like globes. I was wondering if any led bulbs capable of operating on such a system and giving uniform globe illumination was around. Ifrequired I would even buy holders as this is the problem in the current lights, ie insulation displacement connections are unreliable. I I am aware that many forms of rechargeable garden lights exist,but for my use I'm happy with centralcontrol and bright lights. the plug in wire ended bulbs are rubbish and of course tungsten and inefficient. My feeling was a small defused led of some kind in series with a diode so I could share the ac cycles between lights soto speak. Brian -- ----- - This newsgroup posting comes to you directly from... The Sofa of Brian Gaff... Blind user, so no pictures please! |
#2
Posted to uk.d-i-y
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An LED question
On 09/11/2016 16:43, Brian Gaff wrote:
In my garden I have some globe lights, all are fed from a transformer giving nominally 12v ac from a radio switch I can operate from my pocket. However the construction of the wiring andlights is quite frankly rubbish, but I do like globes. I was wondering if any led bulbs capable of operating on such a system and giving uniform globe illumination was around. Ifrequired I would even buy holders as this is the problem in the current lights, ie insulation displacement connections are unreliable. I I am aware that many forms of rechargeable garden lights exist,but for my use I'm happy with centralcontrol and bright lights. the plug in wire ended bulbs are rubbish and of course tungsten and inefficient. My feeling was a small defused led of some kind in series with a diode so I could share the ac cycles between lights soto speak. Something like this might well do the job. https://www.amazon.co.uk/Liqoo-10pcs...dp/B00ZTZ8ZV2/ There are cheaper ones too but not quite so nice. -- Regards, Martin Brown |
#4
Posted to uk.d-i-y
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An LED question
On Thursday, 10 November 2016 08:22:20 UTC, Brian Gaff wrote:
Spotlights sounds like one direction though. I'm looking at something where the large ish globe is all evenly illuminated. I have bought 4 of these for the garage - they're brilliant. http://ebay.eu/2fFcPMo |
#5
Posted to uk.d-i-y
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An LED question
On 10/11/2016 08:22, Brian Gaff wrote:
Spotlights sounds like one direction though. I'm looking at something where the large ish globe is all evenly illuminated. My light perception is what I'm after using having no focus any more spots would vanish if viewed from other directions. Brian Its a "spotlight" with a beam width of 270 degrees. Basically intended as a functional equivalent of a bare 12v quartz halogen bulb. I haven't used the new ones but something similar and they are pretty bright compact light sources. The only criticism might be that they are too point source like and a bit dazzling when in line of sight. -- Regards, Martin Brown |
#6
Posted to uk.d-i-y
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An LED question
In article ,
Brian Gaff wrote: Spotlights sounds like one direction though. I'm looking at something where the large ish globe is all evenly illuminated. My light perception is what I'm after using having no focus any more spots would vanish if viewed from other directions. LEDs as such do tend to be approaching a point source and directional. The 'lens' on them may modify this. To get a large even globe, you'd need a lot of them and a diffusing outer. I've not seen any that look just like opaque globe tungsten - they tend to have more of a hot spot. Tungsten of that type likely have a very long filament which is why they are more delicate than GLS. -- *Depression is merely anger without enthusiasm * Dave Plowman London SW To e-mail, change noise into sound. |
#7
Posted to uk.d-i-y
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An LED question
On 10/11/2016 10:30, Dave Plowman (News) wrote:
I've not seen any that look just like opaque globe tungsten Is an opaque one an energy saving bulb as you don't need a filament or is 100% inefficient as it just gets hot? |
#8
Posted to uk.d-i-y
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An LED question
On Thursday, 10 November 2016 10:33:32 UTC, Dave Plowman (News) wrote:
I've not seen any that look just like opaque globe tungsten - they tend to have more of a hot spot. Tungsten of that type likely have a very long filament which is why they are more delicate than GLS. These http://ebay.eu/2fFcPMo In action he https://pbs.twimg.com/media/CwMxLg0W8AIBpZf.jpg |
#9
Posted to uk.d-i-y
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An LED question
On 10/11/2016 10:30, Dave Plowman (News) wrote:
In article , Brian Gaff wrote: Spotlights sounds like one direction though. I'm looking at something where the large ish globe is all evenly illuminated. My light perception is what I'm after using having no focus any more spots would vanish if viewed from other directions. LEDs as such do tend to be approaching a point source and directional. The 'lens' on them may modify this. To get a large even globe, you'd need a lot of them and a diffusing outer. I've not seen any that look just like opaque globe tungsten - they tend to have more of a hot spot. Tungsten of that type likely have a very long filament which is why they are more delicate than GLS. You can get them in globes. Although TBH I prefer the cheaper corn on the cob types if I want something approximating omnidirectional. -- Regards, Martin Brown |
#10
Posted to uk.d-i-y
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An LED question
On Thursday, 10 November 2016 12:00:46 UTC, Martin Brown wrote:
You can get them in globes. Although TBH I prefer the cheaper corn on the cob types if I want something approximating omnidirectional. I nearly got killed while 20 foot up a ladder screwing in a corncob. https://www.avforums.com/threads/som...ethal.1862196/ |
#11
Posted to uk.d-i-y
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An LED question
In article ,
Martin Brown wrote: I've not seen any that look just like opaque globe tungsten - they tend to have more of a hot spot. Tungsten of that type likely have a very long filament which is why they are more delicate than GLS. You can get them in globes. Although TBH I prefer the cheaper corn on the cob types if I want something approximating omnidirectional. I have a large globe tungsten in the light above a table. Used because it looks pretty. Very evenly lit approx 6" sphere. I'd like a dimmable LED to do the same job. But must look as good on and off. -- *A clear conscience is usually the sign of a bad memory * Dave Plowman London SW To e-mail, change noise into sound. |
#12
Posted to uk.d-i-y
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An LED question
On Thu, 10 Nov 2016 12:00:43 +0000, Martin Brown wrote:
On 10/11/2016 10:30, Dave Plowman (News) wrote: In article , Brian Gaff wrote: Spotlights sounds like one direction though. I'm looking at something where the large ish globe is all evenly illuminated. My light perception is what I'm after using having no focus any more spots would vanish if viewed from other directions. LEDs as such do tend to be approaching a point source and directional. The 'lens' on them may modify this. To get a large even globe, you'd need a lot of them and a diffusing outer. I've not seen any that look just like opaque globe tungsten - they tend to have more of a hot spot. Tungsten of that type likely have a very long filament which is why they are more delicate than GLS. You can get them in globes. Although TBH I prefer the cheaper corn on the cob types if I want something approximating omnidirectional. Careful! 'Corn' looks like a corn-cob; 'COB' means chip on board (not the same as SMD) and some narrow-angle GU10s are COB: one chib, er, on a board (FSVOB). -- Peter. The gods will stay away whilst religions hold sway |
#13
Posted to uk.d-i-y
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An LED question
On Thu, 10 Nov 2016 08:22:15 -0000, "Brian Gaff"
wrote: Spotlights sounds like one direction though. I'm looking at something where the large ish globe is all evenly illuminated. My light perception is what I'm after using having no focus any more spots would vanish if viewed from other directions. Use 12V LED lights meant as replacements for car side lights. For example https://www.aliexpress.com/item/10PC...8-bae29f118b29 These have near enough all round illumination. If you need to remove all light point sources simply put a tube of translucent material such as tracing paper over them. You might need to get someone to do minor surgery to connect to the base wires but that doesn't seem to be too difficult. Run them all off a suitable 12VDC supply (such as a surplus computer power supply). |
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