All my IN-18 clocks clang. Must be inherent to that tube.
On Sunday, January 15, 2017 at 5:06:47 PM UTC-5, MichaelB wrote: > > You know, I can't isolate which digits are doing it and when. It seems > very random which would make sense since I'm sure the the digits cool at > varying rates based on their size and shape. > > Don't get me wrong, it does not bother me, in fact. I kind of like. It is > very subtle. > > On Sunday, January 15, 2017 at 1:08:13 PM UTC-8, jf...@my-deja.com wrote: >> >> On my B7971 clocks, you can hear the tubes “sing” at the mux rate, and >> the “timbre” would change as the digits changed (the mux’ing also generated >> at lot of RFI). I mentioned this many years ago when I said that they >> had been running 24/7 for over 30 years (now 40) with zero tube failures. >> One other list member suggested that I might have been hearing the >> magnetostriction from the transformers in the SMPS, but I found this >> unlikely since I could isolate the sound to the tubes and because I had >> used linear power supplies. >> >> >> >> BTW, is the “clanging” noticeably louder when multiple digits change >> simultaneously? (On my computer, the clanging in the video is not >> synchronized with the changing seconds digits). >> >> >> >> You might be able to reduce the noise by increasing the rise time of the >> current applied to the tubes. >> > -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to neonixie-l+unsubscr...@googlegroups.com. To post to this group, send an email to neonixie-l@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/02f7e40c-c6e2-402f-bcdf-bf3bad150795%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
