When I had initial problems with my A101, I increased the steering voltage by using a larger cathode resistor and it's worked flawlessly ever since. I couldn't tell from posted scope trace what the measurement was. Also, you want to have overlapping waveforms, with no dead-time, to ensure the gas is always ionized. Again, with my A101 as an example, I have 3 driver transistors, A, B, and C where "A" is all 10 cathodes tied together, and B & C are the steering cathodes. The 6-stage sequence is A-> AB ->B ->BC -> C -> CA -> A (repeat). To reverse the direction, swap the sequencing of B &C.
On Wednesday, February 23, 2022 at 1:33:00 PM UTC-8 Tidak Ada wrote: > Hi Martin, > > > > No, I was not aware, despite Giorgio is a friend of me…. > > > > Thanks for your tip and experience > > > > Eric > > > > > > *Van:* [email protected] [mailto:[email protected]] *Namens > *Dekatron42 > *Verzonden:* woensdag 23 februari 2022 13:06 > *Aan:* neonixie-l > *Onderwerp:* Re: [neonixie-l] Re: Stuck with a stuck dekatron > > > > Regarding the Pressler N3, I hope you have seen the datasheet here: > http://lampes-et-tubes.info/cd/N3.pdf > > > > Out of the bunch that I own of these only a few are running (and maybe > half are out-gassed and some have mechanical faults like loose welds and > pins rumbling around inside the envelope) with the original circuit. > > > > /Martin > > > > > > > > On Wednesday, 23 February 2022 at 12:04:19 UTC+1 Tidak Ada wrote: > > Hi all, > > > > > > Unfortunately no further info here. > > A guess is it a kind of cathode poisoning?? > > > > Did you already contact the *TCA* [ [email protected] ]. They are > based in the USA, so the chance is greater there is info to find. > > > > I have the same problem with a rare Pressler N3 dekatron. Anybody her who > can help me on data and applications? > > The Pressler N3 is a WW-II tube with a 8 pin ‘German Stahlrohren’ base. > > I have no data and therefore no clue how to drive the tube. > > Trying to light up the tube with a blue-ray machine did not work > > > > Cheers, > > Eric > > > > *Van:* [email protected] [mailto:[email protected]] *Namens > *Dekatron42 > *Verzonden:* woensdag 23 februari 2022 10:09 > *Aan:* neonixie-l > *Onderwerp:* [neonixie-l] Re: Stuck with a stuck dekatron > > > > -- > 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/ec4d3629-f38a-4fcc-9ffd-3044de6fa6a3n%40googlegroups.com > > <https://groups.google.com/d/msgid/neonixie-l/ec4d3629-f38a-4fcc-9ffd-3044de6fa6a3n%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/5e3fd4ae-7fa4-44f0-8bed-f242792e34d6n%40googlegroups.com.
