Having  had a fan failure on a well insulated Rb we use a temperature sensor also used for compensation in to a PIC to shut down the systemBert Kehren Sent from my Galaxy Tab® A -------- Original message --------From: "David G. McGaw" <david.g.mcgaw@dartmouth.edu> Date: 5/10/17 11:20 PM (GMT-05:00) To: Discussion of precise time and frequency measurement <time-nuts@febo.com> Subject: Re: [time-nuts] Fwd: HP10811 Oscillator Thermal Fuse I too have had a fuse open up due to a failed thermistor in a HP10811. David N1HAC On 5/10/17 7:43 PM, Dan Rae wrote: > As I reported the last time this subject came up, or maybe the time > before, the only time I had an open thermal fuse was in a 10811 that > had an open thermistor.  I was able to replace that and get the OCXO > working, but if the fuse had been replaced with a wire link I'm sure > the entire oven would have been toast. > > There have been two types of fuse fitted, all I those have are the > type that can be fitted with the plug in axial panasonic type, less > than a dollar from Digikey.  The older ovens had a different type but > I imagine it's similarly easy to replace. > > All my 10811s have the higher temperature Panasonic fuse fitted and I > sleep well at night... > > Dan > _______________________________________________ > 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. _______________________________________________ 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.