[Boatanchors] Cooling Fan

Wed, 9 Jul 2003 08:32:28 -0700 (MST)

I've used a series capacitor...somewhere around .1 - 1 uF or so with
appropriate AC voltage rating.

73 de Jack

> Hi.
> A big IF, but if you do have room for two of them I have found that
> wiring a pair in series will reduce their speed and noise significantly
> with no Ill side effects.  Alternatively a resistor in series
> (sufficient wattage) often works well.  And if you put the resistor in
> the airflow it will reduce the needed size somewhat.  I've used this
> trick on Yaesu FT-101 transceivers where the TR relay was used to bypass
> the resistor when transmitting (full speed) and the fan ran at slower
> speed when listening.
>
> 73 de Phil, KO6BB
> DX begins at the noise floor!
> [email protected]
> Merced, California
> 37.18N  120.29W  CM97sh
>
> -----Original Message-----
>
>
> Is there a simple way to reduce the speed of a 115VAC
> muffin fan so it runs about 1/2 its normal RPM?
>
> ====Glen, K9STH
>
>
>
>
>
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