Electromechanical Relay Nixie tube digital clock prototype with 24 hour cycle reset
Electromechanical Relay nixie clock with IN-1 nixies with 3D printed unobtanium sockets.
4.194304 MHz Quartz crystal oscillator and 4521 frequency divider provide accurate 1 Hz pulse. In the future pulse will be generated by OCXO with possible accuracy +\- 1 second per 3 years
No need for rubidium frequency standard as second hand units from eBay are already aged and with 24/7 run would soon bring problem with jitter. Also energy consumption would be an issue for just a clock. Pulses are counted by 4017 decade logic and 24 hour reset is provided by two 2N222A NPN transistors.
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