Re: [time-nuts] 5680A update (temperature stabilization)

2012-01-17 Thread beale
I tried a simple bang-bang controller (LM35 temp sensor+comparator+pass transistor to drive a small fan) with the LM35 taped to the center of a large finned heatsink. The FE-5680A+heatsink are sitting upside down, so heatsink fins point up. LM35 leads wired with 34 gauge wire, which is taped alo

Re: [time-nuts] 5680A update (temperature stabilization)

2012-01-17 Thread paul swed
Well done. You have answered a couple of questions for me. The heat sink inside is small so its easy to see why all sides of the case should be close in temperature. Like you in tinkering, I attached 4 reasonable size heat sinks with the case off and noticed I could drop the internal heat sink to 1

Re: [time-nuts] 5680A update (temperature stabilization)

2012-01-17 Thread Bob Camp
swed Sent: Tuesday, January 17, 2012 4:02 PM To: beale; Discussion of precise time and frequency measurement Subject: Re: [time-nuts] 5680A update (temperature stabilization) Well done. You have answered a couple of questions for me. The heat sink inside is small so its easy to see why all sides o

Re: [time-nuts] 5680A update (temperature stabilization)

2012-01-17 Thread Don Latham
tenuates external fields is > helping you out. > > Bob > > -Original Message- > From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On > Behalf Of paul swed > Sent: Tuesday, January 17, 2012 4:02 PM > To: beale; Discussion of precise time a