Nicely done.
Not on Ten-Tec but on other gear I've built temperature controllers. Most of
the time the fans run at a snail's pace and make essentially zero noise. They
only pick up the pace when they need to. Some ham offers a nice little kit but
I can't seem to find the contact information.
Incidentally, a friend who does thermal analysis as part of his engineering
practice pointed out that horizontal fins on heat sinks work poorly without a
fan. He threw out some numbers but I've forgotten them. I seem to recall quite
a difference between horizontal and vertical fins with the same surface area.
This was after I built a home brew AM transmitter with giant,
horizontally-finned heat sinks for the MOSFETs. I do remember him saying it
takes very little air from a fan to dramatically improve the situation. So
that's what added, just a little bit of moving air.
Jon
On Mar 6, 2014, at 3:02 PM, K8JHR wrote:
> 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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