- Dec 3, 2004
- 2
- 0
- 18,510
Ok, I have an idea for an XGA projector project, but I wanted some feedback on whether or not it's a good idea first. I haven't built my own projector yet, but I'm working out the details right now. The biggest drawback and risk involved, IMHO, is the heat put off by the halogen bulb. This wastes quite a bit of electricity, marginally heats up the room, and most importantly, requires extra cooling in the form of a decent fan (and possibly a PC power supply with its own fan)... thereby increasing the noise level in the room substantially. Of course, there's also the risk of damage to the screen itself from excessive heat as well.
Here's what I was thinking. What if I tried replacing the halogen with a compact fluorescent bulb? For about $26, you can get a 5500K ("full spectrum"), 3500 lumen CF bulb that only uses 55W and puts off very little heat. That's cheaper and the same light output as the 300W halogen bulbs used in these overhead projectors. It seems a waste in one way though... the projector already has the necessary ballast for a halogen bulb... that would just have to be removed (maybe it could be used for something else?). Also, I'm not sure if the projector can accommodate this size of bulb: 3" x 8 1/2". As for wiring, none is required.... this bulb is made to screw into a conventional 110VAC light receptacle... an adapter can be purchased for a few dollars at any hardware store to plug this directly into an extension cord. Also, will there be a problem with the shape of the bulb? I'm a bit worried that the light won't be even since the bulb was not designed for this type of use.
Well... what do you think? Ideas? Suggestions?
Hope it's ok to include this... here's the link to the CF bulbs I mentioned above:
http://www.rewci.com/onecas10ver1.html
Here's what I was thinking. What if I tried replacing the halogen with a compact fluorescent bulb? For about $26, you can get a 5500K ("full spectrum"), 3500 lumen CF bulb that only uses 55W and puts off very little heat. That's cheaper and the same light output as the 300W halogen bulbs used in these overhead projectors. It seems a waste in one way though... the projector already has the necessary ballast for a halogen bulb... that would just have to be removed (maybe it could be used for something else?). Also, I'm not sure if the projector can accommodate this size of bulb: 3" x 8 1/2". As for wiring, none is required.... this bulb is made to screw into a conventional 110VAC light receptacle... an adapter can be purchased for a few dollars at any hardware store to plug this directly into an extension cord. Also, will there be a problem with the shape of the bulb? I'm a bit worried that the light won't be even since the bulb was not designed for this type of use.
Well... what do you think? Ideas? Suggestions?
Hope it's ok to include this... here's the link to the CF bulbs I mentioned above:
http://www.rewci.com/onecas10ver1.html
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