Scroll down to the third group of links, titled "All Tube Nixie Clocks":
http://threeneurons.wordpress.com/about/ Are you including power supply and timebase in your calculations ? Actually, the ECC83 (aka 12AX7) is not the best choice for logic. The ECC82 (12AU7) or ECC81 (12AT7) would be better choices. The 12AX7/ ECC83 can't pull enough current to really light up a nixie. When they actually used tubes in computers, the 5963 (a special version of the 12AU7/ECC82) was used, because it could go a long time in the 'cutoff' state, without damaging the tube. If you really want to lower you're tube count, use bi-quinary nixies. The B5025 & ZM1030/ZM1032 are the only tubes made this way. They all have the same pinout, and us the miniature 9-pin base, so you can use the same socket type used for the ECC81. Using a bi-quinary lowers the tube count by about half. If you use binary counters and then decode, you only need a 1-of-5 and 1-of-3 decoders, instead of 1-of-10 and 1-of-6 decoders. If you ring counters, use a 5-stage with a binary flip-flop, instead of a 10- stage. Likewise for the 6-stage. Here's the datasheet for the ZM1030: http://frank.pocnet.net/sheets/045/z/ZM1030.pdf As you can see it has only 5 cathodes, but two anodes (odd & even). So depending on which anode is powered, the display will be either 0,2,4,6,8 or 1,3,5,7,9. Biquinaries only have an advantage with discrete circuits. Once you start using ICs, and advantage is lost. If you don't believe me, 'pencil-whip' a circuit either way. -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To post to this group, send an email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/neonixie-l?hl=en-GB.
