> How much voltage are you applying ? If it's too low, some cathodes wont > fire. 150V-170V is usually enough, but a used tube may need more. >
Gregebert, I followed your tip and I could light up all filaments in the B5094 at 198 V. I had to pay a small price for the test, though: I fried a K155 driver chip. This probably happened when I plugged in the socket a 5092 that works at 170V leaving the supply voltage at 198V and a 100k current limiting resistor. The circuit firmware simply cycles through all symols in the Nixie and all of a sudden all symbols would light up together. Once 170 V were restored and the K155DI replaced, everything returned normal. Too many wires in there (and too hot weather) to do a proper troubleshooting, but I kept the chip in case further investigation can reveal useful information and avoid similar faiulre in the future. Paolo -- 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/89de5f60-44f3-4b11-b98e-4292259965ad%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
