can anyone answer some basic questions for me please:
Building a psone projector, and have the
sony psone lcd/huge lens/120v 300w slide proj. lamp
but no fan, what type of fan should be used here
also, how might you recommend this all to be wired ??
does the lcd, lamp, and fan get wired together and then plug into a standard US a/c outlet, or is more complicated, please help before my pants catch on fire from the electrical hazard that I am about to create..
Building a psone projector, and have the
sony psone lcd/huge lens/120v 300w slide proj. lamp
but no fan, what type of fan should be used here
also, how might you recommend this all to be wired ??
does the lcd, lamp, and fan get wired together and then plug into a standard US a/c outlet, or is more complicated, please help before my pants catch on fire from the electrical hazard that I am about to create..
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AAAAAAAAAAAAHHAAHAHHHAHAHAHAAHHAHAHAHAHAHAHAHAHAHHAHAAAAAAAAAAAAA!!!!!!
Stop trying to make me eject coffee through my nose!!!
Stop trying to make me eject coffee through my nose!!!
that sounds easy enough
WHERE can i buy the fan(s) ?
and do i pull the computer power supply from an old cpu ?
any help here would be GREATLY appreciated, please send pics of this process if you have already passed this class ! thank you for your fast reply, the burns are getting more severe by the second...
WHERE can i buy the fan(s) ?
and do i pull the computer power supply from an old cpu ?
any help here would be GREATLY appreciated, please send pics of this process if you have already passed this class ! thank you for your fast reply, the burns are getting more severe by the second...
also
I am trying to keep the size of the diy projector to a MINIMUM
how large is the computer power supply ? is it just a transformer to change the voltage ?
I am trying to keep the size of the diy projector to a MINIMUM
how large is the computer power supply ? is it just a transformer to change the voltage ?
you will find most powersupplies around 5.5" by 5.5" by 3.5"....But I have a couple that produce less power (obviously you wouldnt need 300w to power 3 or 4 fans) but the demensions are 2" by 4" by 5" and produces 120w. You can pick one up on ebay for $15...
As for the connections... slot connections...nothing complicated.
As for the connections... slot connections...nothing complicated.
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also...power supplies have their own switch so you could turn the PSU on in advance to precool the system....or leave it on afterwards to further cool down.
Most PC fans are run on 12V (some are 5V). To save some space, you can run down to your local Radio Shack and pick up a 12V AC - DC converter. It looks like the AC adapter you use for your portable CD player. Says 12V 500mA on the front. Very small. I would guess 3" x 3.5" x 2". Maybe $10.
You don't need 120W of power to run fans. I have 2 squirrel cage fans that run at 100 CFM and take less than 5W.
You don't need 120W of power to run fans. I have 2 squirrel cage fans that run at 100 CFM and take less than 5W.
although thats true. I would beleive he plans on running more then one fan... And a powersupply can literally be found, or given to... A 12v ac to dc wall charger will require soldering and cutting...stripping...and you can only run 1 fan off of it...
A computer power suppl is defently the way to go...
why?
-snap in connections
-up to 10 fans running without any speed lost.
-quick disconnection from unit (unlike a wall psu, which would take up space on the outlet)
-cheaper
-more reliable
-self cooling
-an many more...
check on ebay for a "90w PSU" or "90w Power Supply"...the dimensions are usualy around 2" x 5" x 6" (about a stack of 4 cd's) and will be:
1. very quiet (minature cooling fan to cool itself off)
2. very cheap
3. can easily power 10+ fans and other 12v accessories
4. TINY!
A computer power suppl is defently the way to go...
why?
-snap in connections
-up to 10 fans running without any speed lost.
-quick disconnection from unit (unlike a wall psu, which would take up space on the outlet)
-cheaper
-more reliable
-self cooling
-an many more...
check on ebay for a "90w PSU" or "90w Power Supply"...the dimensions are usualy around 2" x 5" x 6" (about a stack of 4 cd's) and will be:
1. very quiet (minature cooling fan to cool itself off)
2. very cheap
3. can easily power 10+ fans and other 12v accessories
4. TINY!
MAKE SURE YOU DONT BUY A DC-DC POWER SUPPLY. this is only usable with a car battery. so you might want to add " -atx" to your ebay search
ok i am working on it now..
if you guys only had a tip jar ..............😉
will report results very very very soon
lots of final results with pics !!!!!!
if you guys only had a tip jar ..............😉
will report results very very very soon
lots of final results with pics !!!!!!
And see, again I think this is a little overkill. A computer power supply will work but it is definitely hotter, bigger, and noisier than just a simple AC-DC power supply. I have 2 squirrel cage fans running on mine. I could easily put 2 more. If you ran 80mm fans, they use around 100mA, if that. 4 could be powered by this power supply. There is definitely no power problem. Even if there was... get the 1000mA version or the 1500mA version. WAY more power than you will EVER use on case fans. 90W is overkill. At around 1.5W a piece, a 500mA 12V DC power supply will run 4 of them. 1000mA will run 8 of them. That's only 6W for 4 fans or 12W for 8 fans. A 90W power supply is overkill unless you are running something else aside fans (like a PC or your LCD screen). Then a PC power supply would be worth it.
You don't need to solder either. If you can handle a pair of wire cutters and are able to screw on 2 wire caps, you're done.
An even better idea that GG has done is use an AC fan. Radio Shack carries them. No converters period. Uses the same power connection as your ballast and LCD power supply.
This is just not true. It is cheap. It is quieter. It is safe. It is smaller. It is cooler (physically).
Case fans are generally 1.5W each. Most DIY projectors have 2 - 4 fans (ie 3W - 6W of total power).
You can use a 500mA AC-DC power converter from Radio Shack; which can handle 6W SAFELY. If you need more fans, you can get the 1000mA version. That's 12W total or 8 fans. $16 - $20 brand new (no shipping).
The 90W PC supply you speak of is 15 times too much power for just fans. Why use a butcher knife to cut up carrots? By having a fan, this power supply is obviously louder. At 90W versus 6W or 12W, it also creates a lot more heat. In a case where you want to keep things cool, I would think you'd want components that are cooler running. Being a PC power supply it is also bigger.
I'm not saying that a PC power supply is the wrong choice. I'm just saying that a AC-DC power converter is just as good at running fans. If you want to use a PC power supply, that's fine. It's probably cheaper and a little easier to plug and go. Make your own choice based on what you need.
Case fans are generally 1.5W each. Most DIY projectors have 2 - 4 fans (ie 3W - 6W of total power).
You can use a 500mA AC-DC power converter from Radio Shack; which can handle 6W SAFELY. If you need more fans, you can get the 1000mA version. That's 12W total or 8 fans. $16 - $20 brand new (no shipping).
The 90W PC supply you speak of is 15 times too much power for just fans. Why use a butcher knife to cut up carrots? By having a fan, this power supply is obviously louder. At 90W versus 6W or 12W, it also creates a lot more heat. In a case where you want to keep things cool, I would think you'd want components that are cooler running. Being a PC power supply it is also bigger.
I'm not saying that a PC power supply is the wrong choice. I'm just saying that a AC-DC power converter is just as good at running fans. If you want to use a PC power supply, that's fine. It's probably cheaper and a little easier to plug and go. Make your own choice based on what you need.
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