The schematic is not the problem, but to find a CMOS BCD to Decimal converter, that can manage the high voltages, needed to drive a nixie. Until now I could not find one. The 4017 has the disadvantage, that it has no latch. It is less complicated to use a 4 bit BCD latch, than to latch the ten outputs of the 4017. Last but not least, the nixie thermo/hygrometer I intend to build will be AVR based, So I don't need counters.
Anyhow, cosider that the dynamic power consumption of a CMOS IC from the 4xxx series is almost equal to that of a TTL equivalent, especially at higher frequencies. There are many decimal counters in the 74HCxx CMOS group, that are eaqual or better. 4xxx CMOS shows verry high output current peaks at the transients between High and Low level. eric On 16 Jan, 12:43, "Huggermugger" <huggermug...@pastisch.se> wrote: > They are equivalent so anyone can be used. Guess the K155DI is easier to > spot. Found many eBay-sellers offering tons of K155DI. > > I have schematics for a digital clock using CMOS counter 4017! > > Magnus > > > > ----- Original Message ----- > From: "Tidak Ada" <offl...@zeelandnet.nl> > To: "neonixie-l" <neonixie-l@googlegroups.com> > Sent: Monday, January 16, 2012 10:28 AM > Subject: [neonixie-l] BCD to decimal converter > > > Hi Guys, witch BCD to decimal converter I can use the best : The > > famous SN74141 or it's russian nephews the K155D1 and KM155D1 > > (ceramic) ? > > > Are there usefull CMOS alternatives, or do I need then always discrete > > transistors/FET's to adapt to high voltage? > > > eric > > > -- > > You received this message because you are subscribed to the Google Groups > > "neonixie-l" group. > > To post to this group, send an email to neonixie-l@googlegroups.com. > > To unsubscribe from this group, send email to > > neonixie-l+unsubscr...@googlegroups.com. > > For more options, visit this group at > >http://groups.google.com/group/neonixie-l?hl=en-GB.- Hide quoted text - > > - Show quoted text - -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To post to this group, send an email to neonixie-l@googlegroups.com. To unsubscribe from this group, send email to neonixie-l+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/neonixie-l?hl=en-GB.
