Re: KPA 500 Fan Noise and cooling performance

Posted by Wayne Conrad on Jun 19, 2012; 7:38pm
URL: http://elecraft.85.s1.nabble.com/KPA-500-tp7557770p7557835.html

I could be wrong, but I think that the Dyson "bladeless" fan has, in its
base, a regular ol' fan, with blades.  As I understand it, that fan
blows air out of holes in the trailing edge of the circular airfoil.
Aerodynamic effects cause a larger volume of air to be dragged through
the airfoil than the fan itself is pushing through the little holes.

If that's so, it ought to be no worse a generator of RFI than any other fan.

73, Wayne Conrad KF7QGA

On 06/19/12 12:24, Ron D'Eau Claire wrote:

> Has anyone every operated one of those in close proximity to an HF rig?
>
> We built such fans in College waaaaay back in the 1950's and they were a bad
> of an RFI generator as any Tesla coil or Van De Graaf generator in the lab!
>
> After all, they work by electrostatic discharge.
>
> Ron AC7AC
>
> -----Original Message-----
>
> Solution - the Dyson blade less fan. Hihi On Jun 19, 2012 1:41 PM, "Tony
> Estep"<[hidden email]>  wrote:
>
>
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