Hi All, Now I have finished designing and testing the Set/Reste and Carry stages for the Russian A-201 Polyatron using the simplified driving stage I published a few days ago.
This design also relies on the same Russian patent, SU609215, for the simplified driving stage as it uses that driving stage for the Set/Reset stage, it also uses the design found at Radiokot.ru in that it uses the -160V line for the driving stages and Carry stage. The Carry stage however is my own design and it works by checking the negative voltage change on the auxilliary anodes of the Polyatron (being the same as the cathodes of the Nixie tube) and then uses two voltage translation stages to produce a negative output pulse which can be used either as a Carry output pulse or as in the schematic being returned directly to the Set/Reset stage. In the video you can see the polyatron counting from 0 up to 5 and then being reset and then also up to 2 and 7. The maximum frequency is determined by the deionization time at the carry position and ionization time at the Set/Reset position so it is slower than in normal counting but I could get the Polyatron to work reliably up to some 3KHz without a problem when counting 0-5. The video can be found here: http://www.youtube.com/watch?v=R6WOqGV3sQA Cheers, Martin -- 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 post to this group, send an email to [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/092f1581-7fbe-4870-856c-f73de03c63c9%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Dekatron A-201 Martin Forsberg Sweden 2014-03-12 2141 Working Russian Patent SET-RESET and Carry.pdf
Description: Adobe PDF document
