That is very good.
Try using diodes instead of a resistor.
Use a string of 1N4004 or similar.
Each diode drops a good half volt.
You can even make it multi speed if you add a small switch.
73 - Rick, DJ0IP
(Nr. Frankfurt am Main)
-----Original Message-----
From: TenTec [mailto:tentec-bounces@contesting.com] On Behalf Of K8JHR
Sent: Friday, March 07, 2014 12:03 AM
To: Discussion of Ten-Tec Equipment
Subject: Re: [TenTec] Noise from Fans
Here is my solution - using very quiet computer fans. See the link at
the bottom of the page: "Cooling Fan Project"
http://k8jhr.com/project_links.html
I sometimes use a small resistor to slow them down, but they run on 12v and
usually spec out around 15-19 dB noise factor.
I just could not spend over $40 on the TT fan, when I could make one for
less than $10 - including buying a brand new fan. Mine are CoolerMaster
fans that cost me $7 I think.
Maybe my plan will spur some other ideas.
------------------------- K8JHR ---------------------
On 3/6/2014 5:21 AM, Rick - DJ0IP / NJ0IP wrote:
> At the time, most small PC towers had small case fans that ran on 12v,
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