[App_rpt-users] URI's I/O fan control

[Stephen - K1LNX]

I've got this same problem myself and I found this, I haven't put one
together yet, but it looks promising:

http://www.heatsink-guide.com/content.php?content=control.shtml

73
Stephen
K1LNX


On Thu, Apr 2, 2009 at 2:17 PM, John Scoggin <aat3bf at armymars.net> wrote:

>  All --
>
>
>
> You might find this page useful:
> http://www.irlpcables.com/alinco_drxx5t_mobile.html
>
>
>
> I agree with Randy – when it comes to “cooking my finals”, I prefer a
> simple solution.  If you really want to do it right, use a normally-open
> thermostat to control the fan power and a normally-closed thermostat to
> control the transmitter main power. J (obviously with values of operation
> far enough apart NOT to fall into each other’s dead-band!)
>
>
>
> 73,
>
> john
>
>
>
> ____________________________________________
>
> John K Scoggin, Jr. W3JKS/AAT3BF/AAM3EDE/AAA9SL
>
> "WLMM - Sic faciunt omnes (Winlink 2000, Everyone is doing it.)"
>
> US Army Military Affiliate Radio System
>
> Delaware Gateway Station AAB3DE
>
> Special Consultant - Technology
>
> Emergency Operations Officer - Delaware
>
>
>
> ARRL Assistant Section Manager - Delaware
>
> Email: aat3bf at armymars.net
>
> Telephone: (302) 451-5000
>
>
>
>
>
> -----Original Message-----
> From: app_rpt-users-bounces at qrvc.com [mailto:
> app_rpt-users-bounces at qrvc.com] On Behalf Of Randy Hammock
> Sent: Thursday, April 02, 2009 1:41 PM
> To: app_rpt-users at qrvc.com
> Subject: Re: [App_rpt-users] URI's I/O fan control
>
>
>
>
>
> On Apr 1, 2009, at 6:33 PM, Will Wright wrote:
>
>
>
> > Hello to the group,
>
> >
>
> > I wonder if anyone would like to share a timing circuit and it's
>
> > programming use with one of the URI I/O pins, lets say to control a
>
> > fan
>
> > to keep the transmitter cool on transmit and off when not in transmit.
>
> > Thanks
>
>
>
> I prefer mounting a thermal switch on the heat sink of the
>
> transmitter. This way, the fan is controlled by real need, not some
>
> imagined arbitrary need. When the ambient temp is cool, the fan runs
>
> very little. When the ambient temp is elevated, the fan runs longer.
>
> But the transmitter stays a comfortable temp.
>
>
>
> --
>
> Randy Hammock KC6HUR
>
> http://kc6hur.net/~rhammock/ <http://kc6hur.net/%7Erhammock/>
>
> http://irlp.kc6hur.net/
>
> If there are no horses in heaven, then when I die, I want to go where
>
> they went.
>
>
>
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>
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>
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>
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>


-- 
Stephen Brown - ARS K1LNX
Johnson City, TN EM86
http://www.k1lnx.net
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