On 01.08.11 08:10, gene heskett wrote: > The idea being to use the fan to distribute the heat so no external > openings need be used, just the hot box itself. I might check to see > if Dave has any more of those heat sinks I flattened the bottom of so > he could test transmitter modules, that would be ideal and no fan > required at all.
Gene, if that's the way to go, can you get your hands on some cheap heatpipes? (http://en.wikipedia.org/wiki/Heatpipe) Last time I had my hands on some was in 1973, but they should be much better than a closed-off internal fan for thermally connecting hot chips in the middle of the PCB to a finned enclosure. A fan can still be used to move air over the external fins. OK, they're more awkward to work with, unless close to the right length, and there's nothing in the way. (But it can't be a lot worse than RF plumbing, can it? ;-) Erik -- "A friend had given me this EPIRB in Chile and the expiry date on the battery was actually 2002, so you know there was no guarantee it was going to work." - Paul Lim, a 62-year-old Canadian solo mariner, rescued in August 2011. (http://abc.com.au/news/2011-08-02/yachtsman-rescued-in-southern-ocean/2820364) ------------------------------------------------------------------------------ BlackBerry® DevCon Americas, Oct. 18-20, San Francisco, CA The must-attend event for mobile developers. Connect with experts. Get tools for creating Super Apps. See the latest technologies. Sessions, hands-on labs, demos & much more. Register early & save! http://p.sf.net/sfu/rim-blackberry-1 _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
