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how do I go about making a fan controller?

post #1 of 12
Thread Starter 
I need to make a fan controller for my 3 delta FFB fans
all together they eat up 52.2 watts and 4.35 amps
and they are paralleled together on one wire
I do not know what all I need to make a fan controller

do I just need a Potentiometer
will this one work
if not, what do i need to get?

I won't have any problem making it, I just need to know what to get to make it.
Edited by 3dfxvoodoo - 2/3/11 at 8:28am
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post #2 of 12
Sunbeam Rheobus - 60w per channel.

Well one of them is I'm trying to find the link for you.
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post #3 of 12
Really depends on how complicated you want to make it. Im in the process of mocking up a PWM fan controller on my bread board right now for class, but those are kind a pain in the ass to make. The easiest way to make one is with a simple circuit with a potentiometer and whatnot. There are circuit diagrams online that go into more detail. Ill see if I cant find on in a few minutes.

Im just a little curious why you are making your own? Not saying dont do it, because its fun, just curious.

Here is a nice little guide for a PWM fan controller:
http://www.bit-tech.net/modding/2001...n_controller/1
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post #4 of 12
Thread Starter 
Quote:
Originally Posted by G.E.Nauticus View Post
Sunbeam Rheobus - 60w per channel.

Well one of them is I'm trying to find the link for you.
does it use a switch thats switch to 5v 12v and off
cuz that won't work
the fan can only run at 7v~13.2v

Quote:
Originally Posted by lithgroth007 View Post
Im just a little curious why you are making your own? Not saying dont do it, because its fun, just curious.
for fun and something to do
and maybe save a bit of $ too , not that save a bit of cash is a big deal to me
I'd just like to make one instead of buying one
Edited by 3dfxvoodoo - 2/3/11 at 8:36am
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post #5 of 12
Well if you are pretty decent as soldering you can build a few of the PWM controllers for your fans, they should work fine for you. You may need to tweak them a little if you want different voltages though. Good luck with the building.
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post #6 of 12
Quote:
Originally Posted by 3dfxvoodoo View Post
is that use a switch thats has 5v 12v and off
cuz that won't work
the fan can only run at 7v~13.2v


for fun and something to do
and maybe save a bit of $ too , not that save a bit of cash is a big deal to me
I'd just like to make one instead of buying one
I retract my previous, I can't find that one I was thinking of. Some food for though. A household dimmer could possibly work.. If not that a dash light Dimmer for a car, That runs on 12vdc. Um You could probably find what you need for a couple bucks at Harbor Freight... or Napa.
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post #7 of 12
Thread Starter 
Quote:
Originally Posted by G.E.Nauticus View Post
I retract my previous, I can't find that one I was thinking of. Some food for though. A household dimmer could possibly work.. If not that a dash light Dimmer for a car, That runs on 12vdc. Um You could probably find what you need for a couple bucks at Harbor Freight... or Napa.
but could it handle the amperage and wattage the fans take
or does that not matter

EDIT:wouldn't that be the same as just using the Potentiometer by it self
Edited by 3dfxvoodoo - 2/3/11 at 8:52am
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post #8 of 12
Quote:
Originally Posted by 3dfxvoodoo View Post
but could it handle the amperage and wattage the fans take
or does that not matter

Older cars used 10w bulbs in the dash and about 30 of them. = 300w @ 12vdc


Household dimmer must be used with incandescent lights ranging from 20-120w(Each), They can be run with a lot of lights.. We have a dimmer attached to 8 100w bulbs.. = 800w @ 120vac

Both should be capable of doing what you need im just not sure if the household dimmer would work cus fans are on 12v and the dimmer is 120v.

Answer to your edit, In my understanding, That is for like volume control... Dont think it will be able to handle the load you need.
Edited by G.E.Nauticus - 2/3/11 at 8:57am
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post #9 of 12
Thread Starter 
Quote:
Originally Posted by G.E.Nauticus View Post
Older cars used 10w bulbs in the dash and about 30 of them. = 300w @ 12vdc


Household dimmer must be used with incandescent lights ranging from 20-120w(Each), They can be run with a lot of lights.. We have a dimmer attached to 8 100w bulbs.. = 800w @ 120vac

Both should be capable of doing what you need im just not sure if the household dimmer would work cus fans are on 12v and the dimmer is 120v.
ok
but the power source would be 12v so I wont be killing the fans with 120v
but I'm not sure if the dimer will work at 12v tho
and aren't light bulbs AC not DC
so would the dimer work seeing it for a AC power source (or dose that mater)
Edited by 3dfxvoodoo - 2/3/11 at 9:02am
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post #10 of 12
Quote:
Originally Posted by 3dfxvoodoo View Post
ok
but the power source would be 12v so I wont be killing the fans with 120v
but I'm not sure if the dimer will work at 12v tho
and aren't light bulbs AC not DC
so would the dimer work seeing it for a AC power source
We would need some more insight using a dimmer. because of the 12v 120v ac dc issue.

IIRC:
AC = Alternating Current - Househould outlets ect...
DC= Direct Current - Anything that runs on batteries.

Cars run on DC
Computer fans Run on DC

The car dash light dimmer would be your best bet for a mod (I think). Run to a scrap yard and grab one out of any car older then 1990 and you should be set.
Edited by G.E.Nauticus - 2/3/11 at 9:08am
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