Hi I think you will find that things work out a whole lot better if you target something just above room temp. If your room runs 22 +/- 3 C , a set point of 27C likely results in better operation than 17C.
Bob > On Dec 23, 2020, at 2:57 PM, ed breya <[email protected]> wrote: > > This recent TEC talk reminded of some of my long term planned projects, and > related issues. I have at least four "someday" projects involving TECs, to > regulate device temperatures near or below "normal" room temperature, > including a high precision DC voltage standard, a sub-fA electrometer > circuit, a constant temperature block for nonlinear analog computing > elements, and a small general purpose heat/cool box for device and circuit > testing. Each has its own particular system, application, and environment > issues, but common to all is the lower limit of running temperature, based on > the local climate conditions and dew point. I plan to estimate the lowest > possible operating temperatures for expected conditions, that avoids > condensation, and not having to resort to special packaging. > > An essential thing for this is a dew point calculator. I found lots online, > but this is my favorite so far. It's slider-based, so you don't even have to > enter numbers. > > http://www.dpcalc.org/ > > The harder part is finding the normal range of local climate conditions. > > Ed > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
