It's more like a linear Polyatron (although not far from a linear dekatron), if you compare the circuit that I have posted here on the forum for the A-201 Polyatron you can see the similarities between the diagrams in the auction and the A-201 circuit. The A-201 can interface to a Nixie if you wish, but in the IN-21 you have the linear bargraph view built in to the design, just like if you would use the internal wires of a dekatron or polyatron and straighten them out like a Burroughs Bargraph display like the BG12205.
If you look carefully at the photos and the circuit you can see that there is a separate 1st electrode named A0, then 33 groups of 3 electrodes named A1, A2 & A3 making up 99 electrodes, then a last electrode named An. All of these make up a total of 101 electrodes, the first A0 or the last An is used to start at either end of the bargraph and the others in between to make the dot walk up or down the scale. A0 or An can also be used as "glow starter" to have the tube primed. In the auction you can see that you can also use A0 (or An) as a reset/starting electrode and the other as an output electrode, but both A0 and An can of course be used as reset/output electrodes if you design the circuit such. /Martin On Thursday, 9 August 2018 18:00:13 UTC+2, gregebert wrote: > > So is this like a "linear dekatron", or more like a bargraph, ala > IN-9/IN-13 ? > -- 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/msgid/neonixie-l/58628b33-83fa-446e-9275-145e43007369%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
