Fan powering help. Thks

[iliriano6]

www.mpja.com/mobile/12VDC-5inX-1-1_2-EBM-Box-Fan-USED/productinfo/19247 FN/

I would like to run two off these with the same power supply.
1) get power supply 12v 1a to run in series. trying to vent my stand.

Thks for your help.

 

[lpsouth1978]

So what is the question? Personally I would get different fans. Those are all metal and at 48db are rather loud. You can use any computer fan connected to a 12V power supply and it will work great for you. Get some 120mm case fans and you will be able to move more air with less noise.

 

[KrazyKuch]

www.mpja.com/mobile/12VDC-5inX-1-1_2-EBM-Box-Fan-USED/productinfo/19247 FN/

I would like to run two off these with the same power supply.
1) get power supply 12v 1a to run in series. trying to vent my stand.

Thks for your help.

run them in parallel not series

 

[lpsouth1978]

run them in parallel not series

Correct, If you are using a 12V power supply you want to wire them in parallel (+ to + and - to -). I have 4 case fans wired in series for my DIY LED light, however I am using a 48V power supply and the fans are only 12V.

 

[iliriano6]

Correct, If you are using a 12V power supply you want to wire them in parallel (+ to + and - to -). I have 4 case fans wired in series for my DIY LED light, however I am using a 48V power supply and the fans are only 12V.

Right but if run in parallel won't it be same volts more amp?

 

[lpsouth1978]

Right but if run in parallel won't it be same volts more amp?

No, Just because the power supply is rated @ 1A, does not meant that the fans will draw that. By wiring in parallel you will run each fan at 12V, however in series you will reduce the voltage to 6V for each fan, effectively reducing their speed and output greatly. If you were to use a 24V power supply, then you would want to wire them in series.

 

[iliriano6]

Ok so the power supply that I should buy is a 24v 500ma to run 2/12v fans Thks.

 

[lpsouth1978]

Ok so the power supply that I should buy is a 24v 500ma to run 2/12v fans Thks.

That would be fine for running them in series. The Amps of the power supply is really not that important. The fans will only draw the amps they need, as long as you don't go below the amp requirements of the fans you will be good to go.

So, for instance, a 12V 1A power supply would be great in parallel, and a 24V with even 3A would be good in series. I usually decide on a power supply based on what is the cheapest for me that will work. often that means using a power supply that I have laying around. For fans. most small power supplies will do the trick.