Hi Marcin, No problem hijacking the thread as long as it stays on focus. ;) You don't happen to know anyone who can translate the Russian datasheets into English? Using Google translate takes a long time...... Have you looked at page 151-152 in "Electronic counting circuits" by J.B. dance? There you can find a very simple circuit showing how the output signal is taken from a Polyatron/Nixie circuit. The voltage level of the output pulse depends on the bias voltage the biasing network with resistors connected betwen the Polyatron and the Nixie to the H.T line sets, and also if the the resistor in the Anode/Cathode circuit is placed at the Cathode of the Polyatron or in the Anode of the Nixie, the voltage base level depends on the current flowing through the resistor and its value. You just need to couple that pulse through a capacitor and a voltage divider to a transistor or to a tube, just remember that it is a positive pulse if you use a tube and also use a coupling circuit that doesn't load the Polyatron/Nixie circuit as it will otherwise not work correctly. The output pulse drops from the bias voltage to the voltage across the Polyatron and Cathode resistor, but if the resistor is placed at the Anode of the Nixie just to the voltage across the Polyatron. /Martin
On Saturday, February 16, 2013 1:42:06 PM UTC+1, marcin wrote: > Hi Martin, > it seems we are exactly at the same point. I have the original Russian > datasheet, a simple drawing showing A-201 connection found on a Russian > forum and that is all. I have looked through Russian web sites and did not > find any mention about any A-201 usage. But that is often true for many > Russian valves. Well it is similar when I try to find datasheet for a US > Army/Navy/Air CTRs... > What I want to do is a clock (of course) with IN-18 being driven by > A-201s. The A-201 are supposed to be cascaded using cold cathode > thyratrons. Kind of 'all tube' clock. My problem right now is that I am a > happy owner of a single A-201. So, cant do any experiments with cascading. > For the clock I of course need 6 of them, so I still need 5! Anybody would > like part with their A-201? I offer money or Polish nixies including many > special character types. Gosh Martin, now I see I have stolen your thread. > I am sorry!!! > Cheers! > Marcin > > On Saturday, February 16, 2013 1:16:00 PM UTC+1, Dekatron42 wrote: >> >> Hi All, >> >> Does anyone have a circuit diagram for the Russian Polyatron A-201 that >> they could share with me - I have the datasheet (a few different versions) >> and also some information from other books but nothing that shows an actual >> circuit with the A-201 in it. I can get it to work with whats in the >> datasheets but i would like to find an instrument or a true application >> that actually used them >> >> /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 neonixie-l+unsubscr...@googlegroups.com. To post to this group, send an email to neonixie-l@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msg/neonixie-l/-/CRBzsdz2pwMJ. For more options, visit https://groups.google.com/groups/opt_out.
