In some nixie tubes like the LC-513 there is a dot to the left of the digits, see for instance here: http://www.tube-tester.com/sites/nixie/data/lc-513.htm , the LC-513A doesn't have this dot. However on a few of the LC-513 and LC-513A that I have the dot can light up on the right hand side instead or on both side, on some the supports at the top and bottom can light up if the "ic" (internally connected) pins are connected.
Driving the left hand dot on the LC-513 is identical to any other of the digits but in the few circuits that I have seen an extra cathode resistor has been used to limit the current, as in this datasheet for the LC-531: http://www.tube-tester.com/sites/nixie/dat_arch/LC-531.pdf (at 250V the anode resistor is 51k and the cathode resistor plus anode resistor is stated as 300k so some 220-270k can be used). /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/13bd6740-24b1-433c-a684-f841cfb55e6d%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
