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Fan Voltage Scaling

post #1 of 4
Thread Starter 
Would anyone have source(s) for fan voltage vs RPM for a number of different fans?

i.e. RPM at 12v, 7v, and 5v?


I am trying to guesstimate a 2000RPM fan at different voltages since it needs to be quiet for a HTPC.
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post #2 of 4
I would think that past the startup voltage the scaling would be fairly linear.
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post #3 of 4
Thread Starter 
Quote:
Originally Posted by railfan844 View Post
I would think that past the startup voltage the scaling would be fairly linear.

I want to confirm.


In fact, fans should be able to run below spinup voltage.... once spun up.
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post #4 of 4
This guy says it is pretty close to linear, http://forums.anandtech.com/showthread.php?t=1358939

I would think it is, once you get over inertia, but then once it goes faster there is more air resistence making the gains from higher voltage lower.
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