Re: [neonixie-l] Re: In18 displaying cathode poisoning after 1000hrs or less.

Were these currents measured by scope waveform?   There is a big difference between a 1mA current at 100% duty cycle and, for example, 5mA pulses @ a 20% duty cycle, or 8mA pulses @ a 10% duty cycle.   Any of these examples will change the effective brightness.  The 1mA example will likely

Re: [neonixie-l] Re: In18 displaying cathode poisoning after 1000hrs or less.

Hi folks, I have had some time to troubleshoot my clock. I found that when running in night mode the tubes are supplied with around 1 mA, and when in day mode are supplied 5 mA. These readings are taken between the annode resistor (10k) and annode. My understanding is the tubes should recei

[neonixie-l] Datasheet, pinout, or hint for IV-29 single-dot VFD?

Several years ago I purchased two IN-28 and two IV-29 from a gentleman in Ukraine. The IN-28s I used in a Nixie clock project, but the IV-29s are still sitting in my tube collection. If I had any data at the time, I've since lost it, and careful googling doesn't offer any hints. The IV-29 do

[neonixie-l] Re: Tube testing?

Before I proceed, I would like to paraphrase the original article I read on DecadeCounter (here presented to you courtesy of the WayBack machine, because I can't find the original any more):

[neonixie-l] Re: Constant current source design

On Friday, 12 May 2017 17:42:58 UTC+4, Luka C wrote: > > @Nick - I know that cathode current control per segment might seem a bit > of an overkill, but as @greg said, considering the price of the tubes, I > think we should do our best to meet all of the datasheet specs if possible. > And if you

[neonixie-l] Re: Membership...

I notice that the very first 401 messages are missing from the Yahoo!! archive - what happened to those? Nick -- 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 neo