Happy HolidaySs Giveaway - Winners Re-Re-Re-Re-Re-Drawn - 24 hours to Claim!

Get your HBT Growlers, Shirts and Membership before the Rush!


Home Brew Forums > Home Brewing Beer > DIY Projects > Kegerators and Keezers > Using PC case fans, questions on wiring multiple fans
Reply
 
LinkBack Thread Tools
Old 01-10-2013, 12:50 PM   #1
Jersh
Feedback Score: 0 reviews
Recipes 
 
Join Date: Nov 2008
Location: Tampa, FL
Posts: 482
Liked 11 Times on 8 Posts

Default Using PC case fans, questions on wiring multiple fans

Is it possible to power multiple PC case fans in series off a single DC power adapter? If so, any pointers on how to do this? I'm planning to start construction on my new keezer this weekend and will be using multiple case fans to cool the coffin box as well as to move air around the freezer skin (building a cabinet around it with a 3.5" gap). If possible I would like to run 3 fans with one power supply... I'm pretty much a total electrical novice...

__________________
Jersh is offline
 
Reply With Quote Quick reply to this message
Old 01-10-2013, 12:55 PM   #2
ChuckO
HBT_LIFETIMESUPPORTER.png
Feedback Score: 0 reviews
 
ChuckO's Avatar
Recipes 
 
Join Date: Oct 2008
Location: Keyrock, WV
Posts: 936
Liked 92 Times on 76 Posts
Likes Given: 13

Default

You should wire the fans in parallel, so that each fan gets the full voltage from the power supply. The important thing to remember is that the sum of the current ratings or wattage ratings on the fans MUST be less than the current or wattage rating of the power supply.

__________________
ChuckO is offline
 
Reply With Quote Quick reply to this message
Old 01-12-2013, 12:41 AM   #3
kevinb
Feedback Score: 0 reviews
Recipes 
 
Join Date: Mar 2012
Location: , MA
Posts: 635
Liked 30 Times on 26 Posts
Likes Given: 83

Default

Exactly.

__________________

Kevin - One Arm Brewery

"People who drink light ‘beer’ don’t like the taste of beer; they just like to pee a lot."

kevinb is offline
 
Reply With Quote Quick reply to this message
Old 01-12-2013, 01:40 AM   #4
klindeman
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jan 2013
Posts: 13
Default

I just wired one up. Works great.

image-588948461.jpg

__________________
klindeman is offline
 
Reply With Quote Quick reply to this message
Old 01-12-2013, 02:37 AM   #5
Brewski1975
Feedback Score: 0 reviews
Recipes 
 
Join Date: Feb 2012
Location: New Port Richey, Florida
Posts: 55
Liked 2 Times on 2 Posts

Default

Quote:
Originally Posted by ChuckO View Post
You should wire the fans in parallel, so that each fan gets the full voltage from the power supply. The important thing to remember is that the sum of the current ratings or wattage ratings on the fans MUST be less than the current or wattage rating of the power supply.
Not to hijack the thread but I'm in the process of doing this myself and found a power supply "an old cell phone charger" that has the same wattage rating as the fan. I did a quick check to see if it would work and the fan fired right up when plugged in. I'm a complete novice at wiring anything so just curious if this will be ok for the long haul....
__________________
Brewski1975 is offline
 
Reply With Quote Quick reply to this message
Old 01-13-2013, 12:27 PM   #6
RensBerserker
Feedback Score: 0 reviews
Recipes 
 
Join Date: Feb 2011
Location: Arvada, CO
Posts: 65
Liked 1 Times on 1 Posts

Default

Quote:
Originally Posted by Brewski1975 View Post
Not to hijack the thread but I'm in the process of doing this myself and found a power supply "an old cell phone charger" that has the same wattage rating as the fan. I did a quick check to see if it would work and the fan fired right up when plugged in. I'm a complete novice at wiring anything so just curious if this will be ok for the long haul....
Same WATTAGE or same VOLTAGE? They are distinctly different things.

If the output voltage of your power supply matches the input voltage of your fan, this will work great as long as the rated wattage (or "power capacity") of the supply exceeds the power requirement of the fan - which is highly likely.

If the supply wattage rating matches with the fan but the voltages are different, it gets a little more complex... If the supply voltage is higher than the fan voltage, you might end up burning up your fan prematurely; if supply voltage is lower, your fan will simply run at a slower speed and move less air.

Assuming that you mean the voltages match (likely at 12VDC) and the power supply wattage is sufficient to drive the fan, this should work great. Just be sure that your connections are secure (think solder or at least wire nuts) and you should get great performance this way.
__________________
The RensBerKeezer!
RensBerserker is offline
 
Reply With Quote Quick reply to this message
Old 01-17-2013, 12:25 AM   #7
Jersh
Feedback Score: 0 reviews
Recipes 
 
Join Date: Nov 2008
Location: Tampa, FL
Posts: 482
Liked 11 Times on 8 Posts

Default

Allright, so I bought a bunch of fans today and also picked up some 12V power supplies from Goodwill.

Will someone with more electrical knowledge please tell me if this is correct... The fans that I am using are here:

http://www.link-depot.com/dc_fan_8025b.html

It says their current is 0.16A and power is 1.92W....

Here is an image of one of the power supplies that I bought...



Based off of this, I'm thinking I should be able to wire up to 6 of these fans to run in parallel off this one power supply? PLEASE please correct me if I'm wrong

__________________
Jersh is offline
 
Reply With Quote Quick reply to this message
Old 01-22-2013, 01:05 AM   #8
RensBerserker
Feedback Score: 0 reviews
Recipes 
 
Join Date: Feb 2011
Location: Arvada, CO
Posts: 65
Liked 1 Times on 1 Posts

Default

Yes, 6 fans at 0.16A each should draw slightly less than the 1A rated capacity for that power supply. Definitely wire them up in parallel.

Wouldn't be a bad idea to double check the output voltage with a multimeter first, though. I've found wall wart power supplies in my collection that varied SIGNIFICANTLY from the output voltage stamped into them. Sucks to learn that the hard way by burning up a component or two!

__________________
The RensBerKeezer!
RensBerserker is offline
 
Reply With Quote Quick reply to this message
Old 01-22-2013, 02:13 AM   #9
Jersh
Feedback Score: 0 reviews
Recipes 
 
Join Date: Nov 2008
Location: Tampa, FL
Posts: 482
Liked 11 Times on 8 Posts

Default

Cool man, thanks...

__________________
Jersh is offline
 
Reply With Quote Quick reply to this message
Reply



Quick Reply
Message:
Options
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
PC case fans: power-supply or motherboard? Reno_eNVy General Chit Chat 13 02-07-2012 05:35 PM
Fans? 3PegBrew Kegerators and Keezers 3 06-24-2011 04:42 AM
Electric wiring for fans in a keezer WheeledGoat Kegerators and Keezers 33 05-22-2011 11:16 PM
Something to please the BMC fans? NoNothing Recipes/Ingredients 1 05-10-2010 02:34 AM
Any UFC Fans Out there? cercueil General Chit Chat 97 03-24-2010 09:08 PM



Newest Threads

LATEST SPONSOR DEALS