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Quartz-halogen end fracture

Quartz-halogen end fracture

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This was the "spare" lamp included with my Commercial Electric worklight as the original already died at under 200 hours. This didn't last much longer - it failed by cracking at the end. It was lit when it failed, too, and there was no moisture on the lamp nor did I move the fixture while it was on or hot.

GE_Hybrid_CFL+.JPG Powerball_SBCMH+.JPG Cracked_Halogen+.JPG Luma_MR16_spot+.JPG

Light Information

Light Information

Manufacturer:DSGE
Model Reference:D09S
Lamp
Lamp Type:Quartz halogen incandescent
Filament/Radiator Type:C-8
Base:R7S
Shape/Finish:T3
Service Life:<100 hours (rated for 2000)
Fixture
Fixture Type:Worklight
Electrical
Wattage:500
Voltage:120
Optical
Lumen Output:10,000
Color Temperature:3000K
Color Rendering Index:100
Physical/Production
Dimensions:119mm
Factory Location:China, no doubt
Application/Use:Temporary lighting

File information

File information

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Filename:Cracked_Halogen+.JPG
Album name:arcblue / Bulbs in captivity
Keywords:Lamps
File Size:179 KB
Date added:Mar 30, 2011
Dimensions:1005 x 427 pixels
Displayed:203 times
URL:https://www.lighting-gallery.net/gallery/displayimage.php?pos=-53090
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Comments
rjluna2
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Robert


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Mar 31, 2011 at 05:26 AM Author: rjluna2
My guess that these bulb didn't do annealing long enough to make the quartz strong enough after it has been formed. Perhaps one of those Chinese failure

http://en.wikipedia.org/wiki/Annealing_(glass)

Pretty, please no more Chinese failure.

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