ok, so i had my first projector set up and i built the lighing chamber as just a box lined with tin foil (is that safe BTW?) with a 400w MH bulb and when i ran it a few minutes into the operation the fresnal in front of the lens started crumpling up, i guess my prob is that i had no fan in the lighting chamber and therefor there was no cooling but i find it hard to beleive that such a small fan can make such a difference, maybe im just ignorant.
Can someone recomen thwe right kind of fan and perhaps a place to purchase it, and also is there a preferd place in the chamber to install it?
Can someone recomen thwe right kind of fan and perhaps a place to purchase it, and also is there a preferd place in the chamber to install it?
well, the most common fans used are the 80mm computer fans. Get alreast one to suck air in, and one to blow it out. (haha, suck and blow...🙂 ) Getting 3 or 4 in total is better. Remember, its better to have more air going IN, than more air going OUT.
These fans can be purchased at most computer stores that sell parts. These fans cost like 2-10$ i guess.
Best would be to have the air go accoss the bulb and the fresnels and lcd panels.
Ive never built an lcd projector, but this should work fine. Getting very powerful fans with a speed controller would be best.
Good luck!
These fans can be purchased at most computer stores that sell parts. These fans cost like 2-10$ i guess.
Best would be to have the air go accoss the bulb and the fresnels and lcd panels.
Ive never built an lcd projector, but this should work fine. Getting very powerful fans with a speed controller would be best.
Good luck!
For a 400w light first make sure to use tempered glass and/or IR filter and go with at least one 120mm fan and make sure to designed your projector so the air path is sucking (cool) air in first by the lcd and then flowing by your lamp and then blown to outside (hot) by the fan/fans. I am building projectors.
Ok, i will go with the fans.
Im using a panel that has a built in fan and it also has a sheet of glass that im pretty sure is uv coated (if anyone knows exactly, it a proxima ovation 810) and i also use one of those sheets of uv filters that they sell at lumen lab.
Im using a panel that has a built in fan and it also has a sheet of glass that im pretty sure is uv coated (if anyone knows exactly, it a proxima ovation 810) and i also use one of those sheets of uv filters that they sell at lumen lab.
I found a few fans online but they all have those 4 pin pc connectors. is there a way of hooking it up to a outlet anyway?
do the 4 pin jacks have 2 black wires, a yellow wire, and a red wire? Use a computer powersupply.
those could usually be bought anyplace that assembles computers. Or if you know someone who has an old PC lying around in their house so much the better.
in the philippines it could go as low as $8 to as high as $75 brand new... you could connect a lot of fans on this.
a simpler way would be to purchase fans that run on AC current... instead of DC (ones used by the computer)
a simpler way would be to purchase fans that run on AC current... instead of DC (ones used by the computer)
you can use a ordinary 12volt dc adapter, as long as it has enough amps. usually fans use like 150 milliamperes each, so for 4 of them you will need about 600 Ma or .6A
Usually computer powersupplies output over 10Amps at 12 volts.
so you can connect like 50 or more fans, lol! But one thing to remeber about computer power supplies, if you put too much load onto the 12 volt line, and none on the 5 volt one, the 12 volt line may go up higher to like 15 or 18 volts
, so try to keep it under 10 fans.
Computer power supplies are pretty cheap, especially the genetic ones. You could pick up an old computer in a thrift store for like 5$ or even find one on the side of the road (my friend found a p2 computer with a 90$ 17" monitor, perfectly working, sold it to me for 10$canadian, hehe🙄 )
Btw, anyone wanna buy a pentium2 computer for cheap? under 40$?
Usually computer powersupplies output over 10Amps at 12 volts.
so you can connect like 50 or more fans, lol! But one thing to remeber about computer power supplies, if you put too much load onto the 12 volt line, and none on the 5 volt one, the 12 volt line may go up higher to like 15 or 18 volts
, so try to keep it under 10 fans.Computer power supplies are pretty cheap, especially the genetic ones. You could pick up an old computer in a thrift store for like 5$ or even find one on the side of the road (my friend found a p2 computer with a 90$ 17" monitor, perfectly working, sold it to me for 10$canadian, hehe🙄 )
Btw, anyone wanna buy a pentium2 computer for cheap? under 40$?
All right, so i found two old pc's and took the fan out of one and the fan and the power supply out of the second. But is it safe to have the fan opperate outside the power supply? because i have it installed next and not inside it.
well, the fan thats in the powersupply should NOT be removed, get more fans and connect them externally, but KEEP the one thats originally inside. btw, what computers were they?
- Status
- Not open for further replies.