| safwani |
Greeting every one
I am trying to build a projector and I have most of the materials so before I commence this design, I need your opinion
Question; Should I use 600w or 2000w?
Because I have both of them…
Thanks |
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| brianuk |
A 2000w bulb ?
Im a newbie (to projectors) but that seems way too powerful and probably isnt as efficient as many lower ones.
Unless that is you want a VERY large bright screen ? In that case you might need it, but it'll be expesive to run, replace ? and the heat you'll have to deal with must be a lot.
Try the 600W if its bulbs you are talking about, plenty enough for most people, a lot use much less. |
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| doughboy |
| What type of bulbs are you using? 600W/2000W is a lot. |
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| safwani |
Thanks for reply
The 600w is from overhead projector 110 volt .its title is written by Japanese language :att'n:
But the 2000w I saw it in old stuff auction, I think it is used just for wild space or fields and it is 220 volt...
i will try to get pictures for them so you can know them...
Last night I got another idea which is to the 600 w and 350 w ( also for overhead projector) in same time instead of using the 2000w. |
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| safwani |
here are the pic's of the lights that i am talking about
350w |
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| jcbklyny |
Forget the 2000watt. Thats just nuts!
You would need so much tempered glass to handle the heat that you'd lose a ton of the light your trying to get out of the bulb. You lose light with each surface obstruction. Glass, plastic or even bouncing off a first surface mirror. Rough est would be at least 10% per piece of glass and 2-5% per first surface mirror and since you really dont need first surfaces under the LCD you'd lose even more, say 7-12%. So once the setup is able to handle the heat you'd be killing nearly 50% of the light output.
-JCB
www.diybuildergroup.com |
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| bobharry |
| Well the 2000w and 350w bulbs are halogen, which produce a lot of heat, and I'm not sure about the 600w one. |
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| safwani |
I see..
Ok how about putting the 600w with 350w together in same time to be one light source because both of them are halogen and made for projectors light. |
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| brianuk |
The heat would still be crazy, Halogens are hot enough anyway without 950w sitting next to each other.
If you want to really find out, put them in a box together, see how they heat up with a thermometer.:hot:
I think most people her URGE you to try to make a projector with the 350w bulb first. |
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| Iron Man |
Imagine how much it would cost to run a 2000w projector. I have 60watts lighting my bedroom- 2000/60 =33
Basically you could either run your projector or light 33 bedrooms!! |
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| LaserLine |
| It seems to me that it would be more effective puting the LCD closer to the light so you can try to use 100% of it... With the light going off the mirror and going through cracks and such before it goes through the fresnel lens it seems that you would loose some efficienty. |
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