I am almost done with my cooler incubator . I just need to order the pc fans and transformers. Im not sure witch transformer would best fit a 3inch 12vdc fan.
I dont want the transformer to be to powerful and burn out the motor of the fan or not be powerful enough. If anyone can help it would be greatly appreciated.

link to the 3inch 12vdc fan i will be using.

http://www.allelectronics.com/make-a...SUPPLY//1.html


Now the question is what transformer to use ?

both are 12vdc. 1200ma or 500ma ?


http://www.allelectronics.com/make-a...SUPPLY//1.html

http://www.allelectronics.com/make-a...SFORMER/1.html