My first nixie clock uses 4000-series CMOS, and is AC-line powered. Not just the power ( *without* a transformer), but also the timing. There is a battery-backup oscillator. I built 2 in 2011, and our 2 kids each built one. All 4 are still running just fine. They can display 12hr or 24-hour mode.
I simulated the design in verilog so there were no logic errors or fixes on the PC boards. On Saturday, May 22, 2021 at 7:25:26 AM UTC-7 newxito wrote: > Small typo sorry, the youtube channel is called CuriousMarc.... > > My "creepy clock" from 2016 still works and I turn it on from time to > time, but only while I'm in the room :-) > > > > J Forbes schrieb am Samstag, 22. Mai 2021 um 14:38:11 UTC+2: > >> I dind't design the logic myself, I used a design from the TTL >> applications book by Texas Instruments. But the clock is still around, >> twenty years later. I don't leave it running, it's kind of scary. >> >> http://selectric.org/nixie/index.html >> >> and scroll down to the bottom of the page >> >> On Friday, May 21, 2021 at 11:48:58 AM UTC-7 newxito wrote: >> >>> I always wanted to design a nixie clock that uses just 74xx ICs. I know >>> that there are some schematics available but just copying a design is not >>> fun. >>> >>> Recently, I watched a video from CouriousMarc with an intro to a digital >>> logic circuit simulation software called logisim-evolution. I think that >>> will be a big help, the software looks great! >>> >> -- 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 [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/918c583d-02bf-4c0a-b92d-4a7de845d468n%40googlegroups.com.
