[time-nuts] Power supply for 'Bay FE-5680A?
nerd at verizon.net
Fri Jan 6 16:33:36 UTC 2012
A heat sink may not be required, per se, although I would expect that a
larger thermal mass and/or thermal regulation via a closed loop fan
controller will help smooth out/stabilize temperature effects.
On 01/06/12, Chuck Forsberg WA7KGX N2469R<caf at omen.com> wrote:
The Tech Manual does not call for heat sinking (unless I missed
The top has labels over much of the surface.
The bottom has a plastic sheet between the circuitry and bottom plate.
It appears the unit was expected to be rather hot when running.
I have mine mounted on the out side of the box using standoffs.
On 01/06/2012 07:39 AM, Bob Smither wrote:
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> Chris Albertson wrote:
>> On Thu, Jan 5, 2012 at 6:11 PM,<time-nuts at custodes.info> wrote:
>>> l<http://www.freqelec.com/rb_osc_fe5680a.html> says 32W peak,
>>> also 15-18v at 700mA, which doesn't make sense.
>> It will pull 35W for the first five or so minutes then the current
>> rather suddenly to about 700mA.
>> I have an analog amp meter on my power supply and I can see a switch
>> after the unit heats up. They must run an internal oven heater full
>> at first then go into regulated mode.
>> Some one else said you can cause the FE5680 to draw more power in
>> state mode by adding heat sinking it. Yes that works. Seems the
>> wants to be at some set temperature and the heat sink means it takes
>> power to keep at the set point. I just let the fe5680 rest on a
>> aluminum plate.
> Have you measured the case temperature of your FE5680?
> I put mine on a heat sink and the case temperature stays around 50C.
> the heat sink it was around 60C. Does anyone know what temperature is
> recommended? The 50C seems a little hot, but the unit appears to work
> - --
> Bob Smither, PhD Circuit Concepts, Inc.
> Government is not healthy for children and other living things.
> -- Jeff Daiell
> Smither at C-C-I.Com http://www.C-C-I.Com 281-331-2744(office)
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Chuck Forsberg WA7KGX N2469R caf at omen.com www.omen.com
Developer of Industrial ZMODEM(Tm) for Embedded Applications
Omen Technology Inc "The High Reliability Software"
10255 NW Old Cornelius Pass Portland OR 97231 503-614-0430
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