WB6BNQ wrote: > Hi Neville, > > In all seriousness, I thought the Rubidium physics package is heated for > reasons. Now that you are heat sinking it, what has happened to the current > draw > for the whole unit ? Or am I misunderstanding something ? > > Bill....WB6BNQ >
He's not cooling it, he's insulating it from the cool room air. As I understand it, the idea is to make an insulated, warm room for the LPRO to live in, so that its heater doesn't have to work so hard to reach 40C. This is a common approach to keeping equipment temperature stable in a changing environment. It only works if the room air is cold enough, but when it can be used, it works quite well. We use a similar approach in our radiotelescope computer room, by blending the usually cold outside air with the HVAC's return air (which has been heated by 4kW worth of equipment) to make supply air that's just right for the equipment. We used a proportional blending air damper with an off-the-shelf PID controller. _______________________________________________ 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.