Hi The basic answer is:
1) Power them off of something stable around 18 to 19 volts. Anything higher just heats them up without doing anything useful. 2) Put a heat sink on them. You want to get the base plate to below 50C. Without a heat sink they get warm enough to significantly shorten their life. You can indeed get fancy and control the heat sink temperature. They are sensitive to magnetic field, barometric temperature, and humidity as well as voltage and temperature. Keeping them on tends to help with humidity. Bob -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Eric Garner Sent: Friday, October 07, 2011 11:24 AM To: Discussion of precise time and frequency measurement Subject: [time-nuts] the care and feeding of LPRO's Up to this point in my Nuttery I've been messing around with various GPSDOs. I just bought an LPRO off of Ebay. It hasn't arrived yet but I wanted to start getting it ready to hookup and play with. I have several questions that I couldn't find answers to in the archives. 1. has any work been done on optimal power supply design to run these beasties? I'm initially going to run it off of my (very quiet) bench supply but long term I would like to put it in a nice box with it's own supply. how much does power supply noise affect long term stability/noise? 2. what sort of thermal tricks can I do to optimize performance (keep away from drafts or add thermal mass) 3. any other tricks? thanks. -- --Eric _________________________________________ Eric Garner _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
