Oops, Actual video: http://www.dailymotion.com/video/x14ftg4_a107-nixie-driver_tech On Monday, September 9, 2013 1:08:22 AM UTC-7, threeneurons wrote: > > You mean something like this: > http://www.dailymotion.com/threeneurons#video=x148ak5 > > To get rid of two adjacent transistors being on at the same time, make > sure that only an "odd" or "even" cathode is selected alternately. After a > lot of convoluted pondering, I went back to the something that looks like > the original Russian drive circuit: > > > <https://lh6.googleusercontent.com/-fRMqoBWKmsI/Ui2A0zX5cXI/AAAAAAAAMFI/Op7U5w_6Xms/s1600/A107_Nix_Dvr.gif> > Get rid of all the isolating diodes, and connect the odd cathodes to one > half, of the flip flop, and the even cathodes, to the other half. Insert > the nixie driving transistors in each cathode leg. LEDs are also inserted > to show the current paths. > > On Sunday, September 8, 2013 10:54:49 AM UTC-7, Dekatron42 wrote: >> >> Nice that you could adjust it to pass current on two cathodes. >> >> To be able to build a nice clock with these, where each cathode drive a >> transistor which drives the Nixie, only one cathode should be struck at the >> same time. I did not do any tests on whether this was possible with the >> A-107 or A-109. I could only get the A-108 to strike one cathode at the >> same time with my quick tests. Maybe some other parameter needs to be >> adjusted for that to work, like guide bias voltage or other cathode circuit >> load parameters. >> >> /Martin >> >> On Thursday, 5 September 2013 17:04:11 UTC+2, threeneurons wrote: >> >>> Here's a better video of A107 circuit: >>> >>> http://www.dailymotion.com/video/x148ak5_a107-selector-demo-2_tech >>> >>> I did add a 200K resistor in the anode leg, and adjusted it so only 2 >>> cathodes pass current, at any time. >>> >>
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