Magnus wrote:
These days I would assume that heat-pipes would be used to move heat to a large external heat-sink. It's fairly cheap these days.
I have looked into heat pipes for several projects, and in the end have never used them. The main problem is that almost every solution is customized. No trouble if you make PC motherboards or consumer-grade stereo amplifiers 50,000 at a time. But most instruments are made in quantities of 5,000 or fewer, and it takes many years to make (sell) even that number. With production numbers that low, the bean counters want the design and tooling costs amortized over the first year's production -- maybe only 100-500 units -- which can raise the retail price by a factor of 2-10. At least that's what I've found.
Also, most heat-pipe systems are gravity-fed, so if someone turns your product on its side they can burn it down. (I almost always operate my "portable" spectrum analyzer (HP8591E) standing on its rear feet with the screen pointing up. I can foresee someone with limited bench space setting an SR620 on its side.)
Best regards, Charles _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
