Re: Cooling fan Shroud

Albert Peter

The only problem with fan speed controllers is a reduction in cooling capability.  IMHO it is better to start with a capable quiet fan that does not require more circuitry.  It may cost a bit more, but is a simpler solution.




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From: Woody
Sent: Thursday, January 17, 2019 11:57 AM
Subject: Re: [BITX20] Cooling fan Shroud


Fan controllers are easy to build and minimize noise when not needed.

Something like these...  YMMV

Variable analog - Had to add the 3.3 ohm to reduce induced noise in the uBITx from high current fan.


Switched - OFF/ON

Inexpensive fans can be had surplus, like at:


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