PuffPufffPassss
Active Member
what could a computer fan wire up to for power?
Computer Fan
- Thread starter PuffPufffPassss
- Start date
howdydo
Active Member
Marijuana Growing - Search Forums
not trying to be a turd here...i just know (as a newbie), 99% of my questions (including this one) have been answered by either the search function, or the growfaq, or a little of both.
to answer your ? since i am already typing. a 12v cell phone charger works great.
not trying to be a turd here...i just know (as a newbie), 99% of my questions (including this one) have been answered by either the search function, or the growfaq, or a little of both.
to answer your ? since i am already typing. a 12v cell phone charger works great.
mal_crane
Well-Known Member
Got to agree completely on what howdydo said. Any normal cell charger will work to power up a computer fan. A friend of mine had his hooked up to a switch plate and charger so that he could turn them on and off.
And I know it seems simple to just start a thread asking for help, but most newbie questions like this can be found using the search function and/or the GrowFAQ.
And I know it seems simple to just start a thread asking for help, but most newbie questions like this can be found using the search function and/or the GrowFAQ.
born2killspam
Well-Known Member
I'm with netpirate.. Cell chargers are puny.. You need a dc adapter that can pump a few hundred mA atleast for most fans, and the typical 4.5V from a cell charger won't run many fans well.. For most fans, you want a 9-18V adapter that has a bit of weight to it.. Nothing is better than a pc psu.. You can get 5, 7, 10, 12, 17, and 24V from them with various wire combos, and alot of current.. (A whole lot at 5 and 12V, the rest aren't rated for as much current..
You can trick a modern atx psu to turn on by shorting the green wire that goes into the motherboard connector to a black ground wire.. Hook it up to a switch and you have it made..
You can trick a modern atx psu to turn on by shorting the green wire that goes into the motherboard connector to a black ground wire.. Hook it up to a switch and you have it made..
dtchmstr420
Active Member
Thats not true i have a couple processer and power supply fans runnin off 3-5v cell phone chargers, it works great
born2killspam
Well-Known Member
Are you sure it works great? Have you tried 12V without in increase in greatness..
Also using adapters with puny cores will over-heat and kill them eventually.. Dead adapters mean dead air, dead air often means dead plants..
Also using adapters with puny cores will over-heat and kill them eventually.. Dead adapters mean dead air, dead air often means dead plants..
hook them to 12v and watch the RPMs soar.
born2killspam
Well-Known Member
Yea, with a DC fan the power output is proportional to the voltage squared..
dtchmstr420
Active Member
they get a lot louder with a 12v hookd up 2, my setups all hidin, they run fine off of the 5v i have, its not like they look like they need ne more power or are laggin
dtchmstr420
Active Member
i figured it would be to much when the plants r small
BigBudBalls
Well-Known Member
Good, cheap, or quiet. Pick any two.
bigjohn4prez
Active Member
plz do i am about to tackle this problem myself
dtchmstr420
Active Member
i pick good and quiet, what are your suggestions? with one computer fan hookd up to a 5v cellphone charger blowin under the canapy of my plants, i can feel the air blowin out of it 2-3 ft above the fan out of a vent i cut in the box i use, so i got cheap, good, and quiet down, but if u have ne suggestions plz feel free to inform me, im always interested in learnin, but considerin the fan is used to draw power away from a processor that would fry without a fan, im thinkin that 12v mite b a lil stronger then my plants need, considerin theyre not gunna grow to be huge cuz im usin floros, but if i ever feel the need, installin another fan wouldnt be that difficult....
born2killspam
Well-Known Member
PC heatsinks are perfectly designed for small fans to cool them.. You should be able to feel air moving over a dozen feet away.. I'm telling you ppl cell phone chargers running fans are going to get your plants killed.. I run some PC fans at 24V.. 9V takes away the whine from most, and still gives 'ok' air-flow.. The biggest risk with a puny adapter though is that it overheats and konks out, leaving your plants to suffocate/fry..
Go to value villiage or someplace and Atleast get a 9V+ adapter that has a bit of weight to it..
BBB was talking about options you have when you purchase a fan.. Good (reliable), quiet, or cheap.. They're properties of the fan, and I totally agree that you can pick any 2 of those..
Go to value villiage or someplace and Atleast get a 9V+ adapter that has a bit of weight to it..
BBB was talking about options you have when you purchase a fan.. Good (reliable), quiet, or cheap.. They're properties of the fan, and I totally agree that you can pick any 2 of those..
dtchmstr420
Active Member
but ur not tryin to cool a computer, and they r baring-less fans so it doesint take much to power one, take a look at my box set up, if i blow in a couple drags of a cigg in from the bottom and look at the vent i cut out in the top u can see n feel the smoke bein blown out of the box, and like i said 2 5v fans would be better then 1 12v, they can circulate the air better then a lot of airmovement in just one spot