Linear halogen bulbs?? Look VERY VERY bright

NeMeSiS_singh · 29th May 2006, 10:25 AM

hi,

i came across these cheap linear halogen bulbs on ebay that go into a r7 base.

They're used in work lamps and outdoor spotlights etc. They range from 150w versions to 1000w. The best part is that they're less than 1gbp for a twin pack on ebay.

check them out, this is the 500w i want to get:
auction 1

this auction has more detail:

auction 2

if anyoneknow if they would be good in a diy projector, let me know. also if anyone know the colour temp or lumens, that would be great.

cheers

mkl2 · 29th May 2006, 08:58 PM

Not good, huge amount of heat and not a point light source by a long shot.
How much heat? Well, I can light up a cigarette in seconds, half an inch away from a 350W bulb.

NeMeSiS_singh · 29th May 2006, 10:08 PM

i cant really afford a metal halide lamp, only a halogen.

But i am going to be putting a 120mm fan blowing at the bulb and another 120mm exhaust.

also will i need to put a uv filter infront of it??? and will i need a cold glass on the lcd?

cheers

29th May 2006, 10:25 AM	#1
NeMeSiS_singh Banned Join Date: Aug 2005	Linear halogen bulbs?? Look VERY VERY bright hi, i came across these cheap linear halogen bulbs on ebay that go into a r7 base. They're used in work lamps and outdoor spotlights etc. They range from 150w versions to 1000w. The best part is that they're less than 1gbp for a twin pack on ebay. check them out, this is the 500w i want to get: auction 1 this auction has more detail: auction 2 if anyoneknow if they would be good in a diy projector, let me know. also if anyone know the colour temp or lumens, that would be great. cheers

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29th May 2006, 08:58 PM	#2
mkl2 diyAudio Member Join Date: Nov 2004 Location: Bucuresti, Romania	Not good, huge amount of heat and not a point light source by a long shot. How much heat? Well, I can light up a cigarette in seconds, half an inch away from a 350W bulb.

29th May 2006, 10:08 PM	#3
NeMeSiS_singh Banned Join Date: Aug 2005	i cant really afford a metal halide lamp, only a halogen. But i am going to be putting a 120mm fan blowing at the bulb and another 120mm exhaust. also will i need to put a uv filter infront of it??? and will i need a cold glass on the lcd? cheers

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