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Which way around does a CPU fan go?

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moeburn    53

I don't know how much space you have in your HTPC case, but a fan controller might work.


Or you could do it the moeburn way, and try and make your own PWM controller out of a simple 555 timer!



That one is a broad-range controller for anything that runs on 12v, but is specifically stated to work as a fan controller.  And the author has even included how to lay it out and solder it on a standard breadboard!  You'll need a fancy MOSFET (Q1) though, which isn't always something people have lying around in their electronics bins like a 555 timer.  :)

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Sir Topham Hatt    212

If you need to convince yourself of this, just try standing behind a fan rather than in front on a hot summer day.

This sir is a very good point well made.

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