[Amps] Muffin Fans and hot exhaust/2

[Peter.Chadwick@zarlink.com (Peter Chadwick)]

Tom said:

>In fact most noise is caused by bearings in the fan

This is particularly true for fans with ball, as opposed to plain (sleeve)
bearings. Sleeve bearings do need slightly more complex lubrication procedures,
though.


>Three fans and a microprocessor to cool one heatsink

When the heatsink has been machined to a flatness claimed to be one third of the
wavelength of light, it might need three fans to stop the air molecules from
sticking to it!!!!

73

Peter G3RZP