I would interpret that as 7.5mA if you use multiplexing; personally, I much prefer direct-drive because it has minimum current. So, that leaves a wide range for direct-drive; I'm inclined to say keep it on the lower end if that gives enough brightness because that will result in less "wear" via electron bombardment vs higher current and you can always bump it up for awhile if you see any cathode poisoning.
I dont know about the 7094, but I do know that IN-18's are susceptible to cathode poisoning, which is reversible. My 14-digit clock does a 1-hour depoisoning every night but that still doesn't work 100% on the static digits. On Tuesday, June 8, 2021 at 8:52:42 AM UTC-7 Bill Notfaded wrote: > Thanks Greg. The datasheet says peak max is 7.5mA, Avg. max 7mA, Avg. min > 4mA. > > Bill > > On Tuesday, June 8, 2021 at 8:36:11 AM UTC-7 gregebert wrote: > >> The most important thing to do is limit the current to the correct range, >> regardless of whatever value you have for the anode supply or resistor. I >> hope you can find a few more of these rare gems. >> >> On Tuesday, June 8, 2021 at 8:26:13 AM UTC-7 [email protected] >> wrote: >> >>> Electrophoresis supplies are pretty handy. >>> I got a smallish one by Shandon that limits at up to 400V and 100mA. It >>> worked a treat to fix a nixie I had with cathode poisoning. >>> >>> >>> On Tue, Jun 8, 2021 at 4:04 PM Bill Notfaded <[email protected]> wrote: >>> >>>> It's Paul Andrews I was referring to... I'm not at home right now but >>>> the power supply is the one that stands vertical and you can turn the >>>> voltage up into hundreds of volts with knobs... it's dark red. I bought >>>> two of them. They were for Electrophoresis. >>>> >>>> Bill >>>> On Tuesday, June 8, 2021 at 7:53:23 AM UTC-7 Bill Notfaded wrote: >>>> >>>>> I loved that movie btw "Bite The Bullet" with Gene Hackman >>>>> <https://en.wikipedia.org/wiki/Gene_Hackman>, Candice Bergen >>>>> <https://en.wikipedia.org/wiki/Candice_Bergen>, and James Coburn >>>>> <https://en.wikipedia.org/wiki/James_Coburn>. I finally broke down >>>>> and bought one tube I've never had before an NL-7094. I've collected >>>>> some >>>>> NL-8091's but the bigger brother I've never had before. The datasheet >>>>> recommended operating conditions says to use a 9.1K resistor with 200VDC. >>>>> >>>>> It's ionizing voltage is the regular 170VDC. I was going to use my power >>>>> supply like Paul has that can generate any voltage I want to turn it up >>>>> slowly. Should I just use say maybe a 10k anode resistor to start out >>>>> with >>>>> it? I was thinking turn up the voltage slowly with a the resistor on the >>>>> anode and see where the cathodes energize and lite up at? I want to be >>>>> really careful with this tube. I'm getting it with the original National >>>>> Electronics box with the big RED READOUT circle in the middle even! So >>>>> excited. >>>>> >>>>> Bill >>>>> >>>> -- >>>> 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 view this discussion on the web, visit >>>> https://groups.google.com/d/msgid/neonixie-l/9d1c392e-0e23-48d6-ac32-eff6fb67cff0n%40googlegroups.com >>>> >>>> <https://groups.google.com/d/msgid/neonixie-l/9d1c392e-0e23-48d6-ac32-eff6fb67cff0n%40googlegroups.com?utm_medium=email&utm_source=footer> >>>> . >>>> >>> -- 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 view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/9043b0a3-0225-4e40-8a22-5877a353f81en%40googlegroups.com.
