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inspection light
Cars Maintenance General car maintenance (uk.rec.cars.maintenance)
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#21
 
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Re: inspection light -
03-02-2007
, 11:43 AM
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In article <Qa6dnaWMJPrdknXYnZ2dnUVZ8qKvnZ2d (AT) bt (DOT) com>, GreasyFingers <greasy (AT) fingers (DOT) com> wrote: It's possible to get continuous spectrum fluorescent tubes although you'll unlikely find them on an inspection light. But it's a mature technology unlike LED. So as your other post said this sort is the best for bright white light ? http://cgi.ebay.co.uk/Hand-workshop-...QQcmdZViewItem I'd not think an 11 watt anything would give bright white light. Maybe ok for what you need, though. My own inspection light (home made) uses a 55 watt H4 car headlamp bulb. That's plenty bright. out of curiosity does anyone have a led type inspection light and how does it fair when working on a car for seeing what your looking or or doing ? |
I think the 11 wat flourescent light will suffice for what I need, so I'll
get one similar to the one on ebay from my local motor place which I called
and they have them in stock as of monday.
thanks
#22
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I'd not think an 11 watt anything would give bright white light. Maybe ok for what you need, though. My own inspection light (home made) uses a 55 watt H4 car headlamp bulb. That's plenty bright. |
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11W at short range great, as a supposed replacement for a household 60w illuminating a room, crap. Not find a 55w a bit glary at short range? |
--
*One tequila, two tequila, three tequila, floor.
Dave Plowman dave (AT) davenoise (DOT) co.uk London SW
To e-mail, change noise into sound.
#23
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I'd not think an 11 watt anything would give bright white light. Maybe ok for what you need, though. My own inspection light (home made) uses a 55 watt H4 car headlamp bulb. That's plenty bright. out of curiosity does anyone have a led type inspection light and how does it fair when working on a car for seeing what your looking or or doing ? How is your homemade light powered ? |
--
*I used up all my sick days so I called in dead
Dave Plowman dave (AT) davenoise (DOT) co.uk London SW
To e-mail, change noise into sound.
#24
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On 2 Mar, 13:38, "Dave Plowman (News)" <d... (AT) davenoise (DOT) co.uk> wrote: In article <1172837315.028554.21... (AT) 64g2000cwx (DOT) googlegroups.com>, Adam Aglionby <ledli... (AT) gmail (DOT) com> wrote: It's possible to get continuous spectrum fluorescent tubes although you'll unlikely find them on an inspection light. But it's a mature technology unlike LED. Much as the marketers of `Full Spectrum` `Daylight` and the dodgy Dr Ott would have you believe, there ain`t no such thing as a continuous or full spectrum fluorescent. Same with tungsten, then. Shades of grey. My physics does begin to run out here, but tungsten is near to a Plankian black body radiator, ie it starts glowing when you heat it up, calibrated sources use a very well calibrated oven and platinum. Colour Rendering Index of tungsten is 100 , best fluros are low 90`s, LEDs can creep into the 80`s though seen some with mixed sources, RGB + Amber, claim higher. LEDs fine for non colour critical tasks, but would have serious concerns using them for things like medical use because of the colour distortion. Adam |
discharge lamps, with CRIs form 84-91.
#25
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On Fri, 02 Mar 2007 14:11:08 -0000, Adam Aglionby <ledli... (AT) gmail (DOT) com wrote: On 2 Mar, 13:38, "Dave Plowman (News)" <d... (AT) davenoise (DOT) co.uk> wrote: In article <1172837315.028554.21... (AT) 64g2000cwx (DOT) googlegroups.com>, Adam Aglionby <ledli... (AT) gmail (DOT) com> wrote: It's possible to get continuous spectrum fluorescent tubes although you'll unlikely find them on an inspection light. But it's a mature technology unlike LED. Much as the marketers of `Full Spectrum` `Daylight` and the dodgy Dr Ott would have you believe, there ain`t no such thing as a continuous or full spectrum fluorescent. Same with tungsten, then. Shades of grey. My physics does begin to run out here, but tungsten is near to a Plankian black body radiator, ie it starts glowing when you heat it up, calibrated sources use a very well calibrated oven and platinum. Colour Rendering Index of tungsten is 100 , best fluros are low 90`s, LEDs can creep into the 80`s though seen some with mixed sources, RGB + Amber, claim higher. LEDs fine for non colour critical tasks, but would have serious concerns using them for things like medical use because of the colour distortion. Adam Interestingly most of the medical sources I've seen recently have been discharge lamps, with CRIs form 84-91. |
84 is a bit low especially when its red its deficient in, but heck its
easy to focus down an endescope...
Adam
#26
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On 3 Mar, 00:17, "Duncan Wood" <nnipn... (AT) dmx512 (DOT) co.uk> wrote: On Fri, 02 Mar 2007 14:11:08 -0000, Adam Aglionby <ledli... (AT) gmail (DOT) com wrote: On 2 Mar, 13:38, "Dave Plowman (News)" <d... (AT) davenoise (DOT) co.uk> wrote: In article <1172837315.028554.21... (AT) 64g2000cwx (DOT) googlegroups.com>, Adam Aglionby <ledli... (AT) gmail (DOT) com> wrote: It's possible to get continuous spectrum fluorescent tubes although you'll unlikely find them on an inspection light. But it's a mature technology unlike LED. Much as the marketers of `Full Spectrum` `Daylight` and the dodgy Dr Ott would have you believe, there ain`t no such thing as a continuous or full spectrum fluorescent. Same with tungsten, then. Shades of grey. My physics does begin to run out here, but tungsten is near to a Plankian black body radiator, ie it starts glowing when you heat it up, calibrated sources use a very well calibrated oven and platinum. Colour Rendering Index of tungsten is 100 , best fluros are low 90`s, LEDs can creep into the 80`s though seen some with mixed sources, RGB + Amber, claim higher. LEDs fine for non colour critical tasks, but would have serious concerns using them for things like medical use because of the colour distortion. Adam Interestingly most of the medical sources I've seen recently have been discharge lamps, with CRIs form 84-91. Give me convience or give me death.. 84 is a bit low especially when its red its deficient in, but heck its easy to focus down an endescope... Adam |
advantage, it's not as if the view out of an endoscopes particularly
similar to the real world.
#27
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Lin Chung wrote: Lin Chung wrote: Tishtash wrote: ...I was wondering about this kind of light the almost impossible-to-copy-and-paste long, word-wrapped URL not shortened with http://tinyurl.com/ is unceremoniously snipped It has 60 leds on it! it this better or worse than a florescent tube one? My response to a similar query on 2007-01-20: http://tinyurl.com/3xxq74 (3/4 down the page) Currently, Netto has a Special on 12 LED headlamps for £2.99. http://www.netto.co.uk/internet/nettog/menu/main.nsf (Page 4) Just came across this Auto Express review. Intriguing price tags! "Head Torches" http://tinyurl.com/3axhgq ...Here is the original head torch using a krypton bulb...: http://tinyurl.com/2vttgt At one time I used a head mirror, the sort used by ENT surgeons... http://lab108.x0.com/lab108/labandfac.html (1/2 down the page) |
I have just tested the 12 LED headlamp from Netto. Perfect! The
brilliant light (using all the 12 LEDs) resembles the bright 'cold' light
from fluorescent tubes, not the 'warm' glow of the modern incandescent
bulb in your desk lamp. It may come as a surprise to some: for close
up work bending over the engine (i.e. blocking out the light) under the
hood (i.e.situation made even worse), I prefer working in this 'bleached'
light. To me, this is its strength, not weakness. I haven't tried working
on colour coded wires yet. Recalling the fluorescent lights of yesteryears,
again I fear the difficulty referred to in differentiating certain colour
subtlety (in auto electrical tasks) is in theory, not met in practice.
I'm going to spend another £2.99 tomorrow!
--
Lin Chung.
[Paste ntlworld over the Water Margin to send a private e-mail.]
#28
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On Sat, 03 Mar 2007 03:52:12 -0000, Adam Aglionby <ledli... (AT) gmail (DOT) com wrote: On 3 Mar, 00:17, "Duncan Wood" <nnipn... (AT) dmx512 (DOT) co.uk> wrote: On Fri, 02 Mar 2007 14:11:08 -0000, Adam Aglionby <ledli... (AT) gmail (DOT) com wrote: On 2 Mar, 13:38, "Dave Plowman (News)" <d... (AT) davenoise (DOT) co.uk> wrote: In article <1172837315.028554.21... (AT) 64g2000cwx (DOT) googlegroups.com>, Adam Aglionby <ledli... (AT) gmail (DOT) com> wrote: It's possible to get continuous spectrum fluorescent tubes although you'll unlikely find them on an inspection light. But it's a mature technology unlike LED. Much as the marketers of `Full Spectrum` `Daylight` and the dodgy Dr Ott would have you believe, there ain`t no such thing as a continuous or full spectrum fluorescent. Same with tungsten, then. Shades of grey. My physics does begin to run out here, but tungsten is near to a Plankian black body radiator, ie it starts glowing when you heat it up, calibrated sources use a very well calibrated oven and platinum. Colour Rendering Index of tungsten is 100 , best fluros are low 90`s, LEDs can creep into the 80`s though seen some with mixed sources, RGB + Amber, claim higher. LEDs fine for non colour critical tasks, but would have serious concerns using them for things like medical use because of the colour distortion. Adam Interestingly most of the medical sources I've seen recently have been discharge lamps, with CRIs form 84-91. Give me convience or give me death.. 84 is a bit low especially when its red its deficient in, but heck its easy to focus down an endescope... Adam I've had a play with some gel & I reckon being red deficients almost an advantage, it's not as if the view out of an endoscopes particularly similar to the real world. |
Adam
#29
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On Thu, 1 Mar 2007 14:54:43 -0000, "tishtash" <n... (AT) host (DOT) com> wrote: I was wondering about getting an inspection light, I have an old fashion light bulb type which isn't so good. I see these new inspection light types but don't know much about them, they are cordless and use leds lights. Just wondering if anyone has one or could recommend one I can buy ? thanks Just get a 11w low energy bulb. |
electronics in the lamp base wobbling around in the holder, PL lamp is
single longer loop on a bi pin base with all the electronics in the
fitting.
Adam
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