PC Fan, am i gonna ruin it?

Hey guys, I just bought 3 new PC Fans and a couple of DC adapters, problem is, the pc fans run at 12V and .6A and the adapters I found output 12V and 1A. Am I going to burn out the fans pretty fast or should they be fine? Thanks for any input you guys have in advance.

You'll be fine. Actually you could have gotten a single 1.8amp 12vDC converter, since the 3 fans each draw .6amps the converter needs to put out amps equal to the total draw.

serialkiller said:

You'll be fine. Actually you could have gotten a single 1.8amp 12vDC converter, since the 3 fans each draw .6amps the converter needs to put out amps equal to the total draw.

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Actually it doesnt have to be equal, greater then is also fine.

And for each volt over that requirement goes down

EG: 14V would be enough for the 3 fans at 1A and be ok.

There is a way around it though.


If you wire them in seriel, rather then paralel. the added "force" changes it

(.6 + .6 +.6 ) / 2 = 1.2A

Youll get away with it fine at that rating
they will spin just a bit slower.
and since they are in Serial, the added resistance to the line will prevent burnout.

Wouldnt wiring DC motors in series cause the one thats hooked up reversed to spin backwards? I guess that wouldnt really be that bad since you could just flip it upside down before mounting.

serialkiller said:

Wouldnt wiring DC motors in series cause the one thats hooked up reversed to spin backwards? I guess that wouldnt really be that bad since you could just flip it upside down before mounting.

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depends on the motor type.

and your transformer should always be 25% bigger than you need, to reduce heat issues.
so really you need one thats rated for 2.4 amps, and it will last forever. the lower the amperage the transformer outputs, the quicker it will shit the bed... id be impressed if the 1 amp one you have lasts longer than a month