couple of questions about wiring up a computer fan for a prop.

[morpheus1977]

I have two of these computer fans.


and these are its specs


These have to be mobile (being used as part of a Halloween costume)

I have two questions.

Can I just use an 8 AA battery holder for each fan to power these? Two can they be wired together to be turned on by one switch?

[PhoenixHawk]

First ?: Yes
Second ?: Using just one switch you will be putting 24 volts into the 2 fans. They would run ..but not for vary long.
Try using just one 8 AA Battery Holder....and see how the two fans run...being the start voltage is 9 the two should work fine as a prop. If you want them to spin faster add a 4 AA AA Battery Holder to bump it up to 18 volts. .....course a pair of 9 Volt Batteries would take up less space.

[Mineral]

If you had a "DPST" switch (Dual Pole, Single Throw - which is essentially two switches with one toggle arm) you could still keep your two circuits isolated.

[xl97]

As noted above.. using 1 - 8 x AA pack would be enough (since really current is your limiting factor here, and the AA pack should have enough to run both for a little while just fine)

If you wanted longer run times and keeping with your 2 - individual 8 x AA packs.. then use a DPST type switch as mentioned.

I'm not clear if adding more voltage (over the mentioned rated value will blow the fans or not?)

* I would stay away from using any 9v batteries.. they are notorious for being crap and have little current.

[PhoenixHawk]

Yeah forgot about that xl97... 9V tend to juice out rather quickly....do to how they are made.

[morpheus1977]

Thanks for the advice everybidy. I have almost everythibg i need
The store i went to only had one 8 AA battery holder. So i grabbed that and 2 of these
How do i wire them up to make 12 volts..

[morpheus1977]

If i wanted them both to turn on using a momentary switch. Could I still use a spst