Re: Automatic Cooling fans

[Georgia Thomson <georgia@xxxxxxxxxxx>]

i'd recommend just having the fan run all the time, and the hard
drive power is a good place to take that from, if noise is a problem,
you can run it at 7V by connecting + to +12V (the yellow lead
probably) and - to +5V (the red one probably)  the hard drive will
constantly have power, but a signal up the data cable will tell it to
spin up or down, so that's much more complicated to work with.

hope that helps

Georgia
On 13 Jul 2006, at 18:13, Tim Fletcher wrote:

> The Netgear SC101 I have (which runs pretty hot) has been used
> almost constantly today - backing up tons of data - because it
> isn't particularly quick, it keeps the drive spinning for several
> hours and the heatsink gets HOT HOT HOT - too hot to keep your hand
> on it for more than 10 seconds - 60 degrees Plus internally - So I
> figured I would try and cool it down. I gaffa taped a small (35mm)
> northbridge fan onto the heatsync and the difference was staggering
> - at least 15 degrees of cooling - I could do with a fan which will
> switch on automatically at an adjustable temperature - Could be a
> PC case fan, a hard drive cooler - almost anything - It won't be on
> show so it doesn't need to be anything elegant - obviously it would
> be better if it was!
>
> Makes you think, the manufacturer could have easily put a small fan
> in the heatsink - And they reckon a temperature increase of 10
> degrees can halve the life of the drive. Could I take a spur off
> the HDD Power so that the fan spins when the drive spins up?
>
> - any ideas gratefully received?
>
> Tim.
>
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