[plug] that Netway Computers board...

[Bernd Felsche]

On Thu, Aug 28, 2003 at 11:45:33AM +0800, Onno Benschop wrote:
> On Thu, 2003-08-28 at 10:55, Bernd Felsche wrote:
> > Well there is a thermodynamic difference to blowing air onto it and
> > sucking it past.
> 
> :-)
> 
> > Air is a very poor conductor of heat. Whenever possible, the heat
> > sinks of the main heat sources should be thermally-connected to the
> > exterior using a good conductor; possibly copper.

> That would involve actually modifying the board and that is not really

Not having seen the board, I can't really tell. If there are heat
sinks, than an electrical insulator/thermal conductor can often be
attached by a clip to provide a direct path to the outer case.

> an option - given that I've already had to swap out one modem when Optus
> decided that swapping hardware was simpler than providing a firmware
> update electronically. (Strangely enough, that's exactly what they do
> back at base, but I'm obviously not smart enough to upgrade firmware -
> although Optus never said so... :-)

> I'm considering puting a thermo-couple in the loop to power off if the
> box gets too hot - any comments?

I'd be surprised if they didn't have their own shutdown system.

You can get bi-metal contacts that open at about 85C, or thereabouts
and re-close at about 10C less.

-- 
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