On Sunday, January 19, 2014 8:46:37 AM UTC-8, Joseph Bento wrote: > > > Might it be as easy as reversing the grids? I've never tried. >
Correct. A dekatron actually has 30 cathodes. 10 of them are separately pinned-out, so that the counting function is available externally. 10 cathodes are connected to a single pin, call it group1 The remaining 10 cathodes are connected to group 2. The cathodes are arranged radially, something like this: Cathode 0 Group 1 Group 2 Cathode 1 Group 1 Group 2 Cathode 2. All cathodes connect to ground via a resistor. The dot will "follow" the path of least resistance. To make it move, group1 is pulled low, and then group 2 is pulled low. Then group1 is released. Finally, group 2 is released and the dot moves to the next cathode. To reverse the direction, pull group 2 low, then pull group1 low, then release group 2, then release group 1 -- 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/940645f5-bb3b-400f-9702-4da88c04285d%40googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
