Hi > On Nov 21, 2016, at 9:23 AM, Attila Kinali <[email protected]> wrote: > > Hoi Bob, > > On Sun, 20 Nov 2016 22:21:29 -0500 > Bob Camp <[email protected]> wrote: > >> 50 year old inductors may have been made with core materials >> that aged more than just a little bit. I have empirical data on this :) > > Do you have that data available somewhere? I would be very much > interested in it. >
We had a few thousand oscillators that had to be replaced due to coil issues in the 1970’s. We were not the only ones with the problem. Other outfits had very similar experiences. Eventually the coil guys took a look at the materials and “changed something”. After that the coils did not have as much aging when run at 100C forever and ever. Bob > Attila Kinali > > -- > It is upon moral qualities that a society is ultimately founded. All > the prosperity and technological sophistication in the world is of no > use without that foundation. > -- Miss Matheson, The Diamond Age, Neil Stephenson > _______________________________________________ > 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.
