I built a dekatron clock based on https://959radio.co.uk/dekatron.html as shown here: https://www.youtube.com/watch?v=AeS3xuuRBV4 There is a link from that video to a dropbox with photos of the build, including a photo of a hand-drawn schematic. I used a STQ3N45K3 N-channel Mosfet as an inter-stage coupler instead of a vacuum triode.
On Friday, September 22, 2023 at 2:56:11 AM UTC-4 Dekatron42 wrote: > > You can contact the designer of that clock, he answered my questions > manyvyears ago. > > You can also have a look here: > https://threeneurons.wordpress.com/dekatron-stuff/ for dekatron driving > and explanationd. > > /Martin > On Thursday, 21 September 2023 at 20:18:47 UTC+2 Benoit Tourret wrote: > >> Good morning, >> I'm still with my idea of making a dekatron clock. >> >> I found some diagrams at http://959radio.co.uk/dekatron.html >> >> but here is my second question: >> in the diagram http://959radio.co.uk/Sec_Counter.pdf there are two A-101 >> dekatrons to divide the frequency of 1 Hz into seconds. >> each dekatron will pilot its own nixie tube to display the seconds. it's >> via an MPSA42 transistor. one per used cathode. >> the first decatron will increment the second dekatron each time the >> cathode "K0" shines, to increment the tens. >> >> here we have a vacuum triode, but I want to replace it with a transistor >> or perhaps a thyratron; it's a clock, not central heating... >> how would you handle this? >> >> another question, what is x (marked: To other modules)? >> >> and while we're at it, can you just explain to me how the transition from >> 59 to 00 works, via I think Q11 and Q17. but how? and why is G2@DEK2 >> involved? >> And also if there is (as I think) a small error on the DEK2 Bus, which >> should be marked 6 and not 10, and the MPSA42 transistors should be >> numbered from Q12 to Q17. >> the compute module for the seconds and minutes being exactly the same, we >> will stop there. >> >> P.S. If you think to have a better diagram, don't hesitate. >> >> Regards, >> Benoit. >> > -- 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/fca14057-b783-43f2-8c97-b91199b83cecn%40googlegroups.com.
