Having finished the Amperex 8453 display I started on my Dekatron. Thanks to all for the suggestions. I read up on Ronald Dekker's clock project https://www.dos4ever.com/decatron/decatronweb.html and decided against a direct drive from a 74141 because, even if it was practical, it would not look as good as using all the pins. It would look like the 8453 I just finished except without the number mask. A few quick experiments showed that a -24v power supply was needed for the easiest implementation.. This is my design. I will let you know if it works.
A PIC drives the circuit: it starts with Q3 off to force a start at 1. A high on R3 or R4 is the same as the switches in Ron's test circuit placing -24v on the guides. As my PIC sends the BCD for the other displays and clocks the E1T it will generate the sequence to advance or retard this Dekatron.. [image: Dekatron Circuit.jpg] -- 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/f766d38f-440b-4885-9da4-8f6b857e4ee7n%40googlegroups.com.
